Ridewatches

The Ridewatches (ライドウォッチ) are pocketwatch-like devices used by the Riders in Kamen Rider Zi-O that contain the power of past Kamen Riders.

Overview
Ridewatches are armament devices designed like stopwatches that are the power sources for Ridewatch-compatible Rider Systems. Once created, they infuse the previous Kamen Rider's powers along with their memories as well as the history of their monsters as well.

Method 1

 * 1) Confirm that an Another Rider exists during the present day, provided it was born during its original counterpart's debut year.
 * 2) Meet the Rider in present day on which the Another Rider is based.
 * 3) The veteran Rider will return the Ridewatch to the user and ask them to protect their wishes.
 * 4) Return to the past and defeat the Another Rider.
 * 5) Give the veteran Rider(s) a blank Ridewatch, in which they will later manifest when the user returns to the present day to receive them in Step 3. This is the start of a bootstrap paradox in which the veteran Riders lose their memories from this point on and will temporarily regain them as Sougo approaches them in 2018.
 * 6) *According to Woz's opening narration in episode 2, the Ridewatches actually "steal" the powers of past Riders along with their entire existence as Riders from time. This presents a sinister aspect to their creation, as Riders lose their memories and powers upon Zi-O or Geiz's first activation of the respective RideArmor.
 * 7) **In episode 5, it is revealed that Ridewatches not just steal the history of Riders, but also their villains, effectively erasing all conflict from time and preventing a much more imminent bad future from forming. However, the degree of change varies from Rider to Rider, due to the villains in most Kamen Rider series having origins independent of that of the Kamen Rider who eventually faces them, though evidence of their prior existence and impact are still being seen in the altered present.

Method 2

 * 1) Confirm that an Another Rider exists during the present day, provided it was born after it's original counterpart's debut year, preferably present day.
 * 2) Defeat it using Zi-O Trinity.
 * 3) The Ridewatch will spawn upon the destruction of the Anotherwatch (only if the Another Rider has complete powers of the Kamen Riders).

Method 3

 * 1) Gather Ridewatches/Miridewatches from either Another/Future Riders or users of this system.
 * 2) Merge Ridewatches and/or Miridewatches to create new, unique Ridewatches.

Miridewatch Creation
The Four Riders from the future, Shinobi, Quiz, Kikai, and Ginga do not exist in the present day, therefore it is impossible to obtain a Ridewatch from them in the way regular Ridewatches are received. Due to this, the process of creating Miridewatches are fundamentally different from its regular counterpart. Each of the future Riders has had their Miridewatch created using a unique method each time.

Shinobi Watch

 * Another Shinobi was immaturely defeated, which allowed White Woz to use his book and turn the blank Miridewatch in his hand into the Shinobi Miridewatch.

Quiz Watch

 * White Woz placed a blank Miridewatch on Mondo Douan, which had siphoned his powers into a fully functioning Quiz Miridewatch.

Kikai Watch

 * Another Kikai had an accessible holographic keyboard on its chest-plate. By entering the correct password, WILL BE THE KING, White Woz created the Kikai Miridewatch.

Alternate/Erased Timeline Prevention
Since the creation of a Ridewatch involves going back in time, Kamen Rider powers from alternate or erased timelines/continuities cannot be accessed to create Ridewatches as seen with Another Ryuga, whose powers are derived from an erased/alternate continuity. As such, neither Zi-O, Geiz, or Woz can travel back in time to start the process of creating its respective Ridewatch as the timeline the power is from, technically doesn't exist, meaning that Another Ryuga is invincible using conventional means. This is the same case with Kamen Rider Ryuki or another other Kamen Rider from his series, however, Sougo and Geiz are able to obtain the Ryuki and Knight Ridewatches by simply having Shinji Kido in their presence due to the fact all the Mirror Rider's powers were restored in 2019 in a another Rider Fight. Also, because the Time Jackers were able to infuse Kamen Rider Ryuga's powers into an Another Ridewatch, they too seem to have a way to bypass this alternate timeline restriction as well.

Power Restoration
In a manner similar to, if a legend Rider holds and activates a corresponding Ridewatch, they will instantly regain their powers. They can later volunteer to turn their powers back into the Ridewatch.

Design
A normal Ridewatch consists of the following parts:
 * Ride On Starter (ライドオンスターター) - The activation button on top of the Ridewatch. Turning it on will shift the Ridewatch to a standby state before inserting it into the Ziku Driver. Pressing it again will allow the Rider to execute a finisher.
 * Outrigger Grip (アウトリガーグリップ) - The overall exterior body of the Ridewatch. The shape stabilizes the rotation motion of the Wake Bezel and loading of Ridewatch into the Ziku Driver.
 * Wake Bezel (ウェイクベゼル) - The dial of the Ridewatch. It is an energy release valve. By rotating it from its sleep state, which displays the Rider symbol and corresponding year date (in A.D.), to its active state, the Ridewatch becomes active, which displays the full face of the Rider.

The Decade Ridewatch consists of the following parts:
 * Ride On Starter (ライドオンスターター) - The activation button on top of the Decade Ridewatch. Turning it on will shift the Ridewatch to a standby state before inserting it into the Ziku Driver. Pressing it again will allow the Rider to execute a finisher.
 * Progress Cylinders (プログレスシリンダー) - Two cylindrical units located between the Decade Ridewatch's 'face' and Ridewatch slot. It 'upgrades' an inserted Ridewatch's powers, allowing transition into that respective Ridewatch's Rider's upgrade or super form.
 * Ride Canceller (ライドキャンセラー) - A black button located at the far right end of the Decade Ridewatch. It is a sort of security device that forcibly ejects Ridewatches connected to the Decade Ridewatch. Also serves as a button to release Ridewatches voluntarily.
 * Pict Window (ピクトウィンドウ) - The main monitor that takes the form of Kamen Rider Decade's face. It can holographically display information such as time and Ridewatch icons.
 * Groove Bezel (グルーブベゼル) - The Decade Ridewatch's reinforced outer frame, complete with Kamen Rider Decade's signature 'face bars'. It reinforces the Ridewatch and protects it from shock.
 * Wide Outrigger Grip (ワイドアウトリガーグリップ) - The Decade Ridewatch's entire outer exterior. Its shape stabilizes the Ziku Driver's loading operation by letting the fingers of the Rider (when held) act as a boom (moving arm).
 * F.F.T. Slot (F.F.T.スロット) - A slot to attach Ridewatches to upgrade the Decade Armor.

A Miridewatch consists of the following parts:
 * Miride On Starter (ミライドオンスターター) - The activation button located on the top. When pressed, the Miridewatch enters a standby state to prepare itself for insertion into the BeyonDriver.
 * Outrigger Grip (アウトリガーグリップ) - The exterior body. The shape stabilizes loading operation into the BeyonDriver by letting the user's fingers grasp the Miridewatch in a comfortable manner.
 * Gate Activator (ゲートアクティベーター) - The cover/capability valve. When inserted into the BeyonDriver, the Gate Activator splits, releasing the Miridewatch's latent capabilities and allowing the BeyonDriver to read it's data.
 * Pict Window (ピクトウィンドウ) - The graphics printed on the Gate Activator. Tells the user what the data and capabilities within the Miridewatch are.
 * Send Projector (センドプロジェクター) - The screen inside the Miridewatch that lies concealed beneath the Gate Activator. When the Miridewatch is loaded into the BeyonDriver, the Send Projector transmits data into it via super high-speed optical signals.

The Zi-O Ridewatch II consists of the following parts:
 * Ride On Starter II (ライドオンスターターⅡ) - The activation button. By entering this switch, it enters a standby state for connecting to the Ziku-Driver.
 * Outrigger Grip II (アウトリガーグリップⅡ) - The exterior body. It is shaped to stabilize the separation operation of the split leather and the loading operation into the Ziku-Driver by causing the fingers to function as a boom when held by hand.
 * Split Ryūzer (スプリットリューザー) - The separation device of the Zi-O Ridewatch II. By rotating it it separates into the D'9 Side (D'9サイド) and D'3 Side (D'3サイド).
 * Shiny Bezel (シャイニーベゼル) - The capability relief valve. By moving at the same time as separation, the ability of the Zi-O Ridewatch II D'3 Side becomes active
 * Pict Window (ピクトウィンドウ) - The monitor of the Zi-O Ridewatch II. Display capabilities of the Ridewatch with icons and other information such as time is communicated in the top window projected in space.
 * Glitter Window (グリッターウィンドウ) - The D'9 Side's graphic print of the watch. It is displayed simultaneously with separation, and the ability becomes active.

The GeizRevive Ridewatch consists of the following parts:
 * Revive On Starter (リバイブオンスターター) - The activation button located on the top. Pressing it switches the Ridewatch into a standby state to be inserted into the Ziku-Driver.
 * Revive Circular (リバイブサーキュラー) - The front body. It's shape is meant to stabilise the Ridewatch's rotation when switching forms by letting the hand and fingers function as a boom.
 * Divide Window (ディバイドウィンドウ) - The 'hourglass' window. It is the main monitor. Each two blocks divided in the upper and lower sections stores strength and speed abilities separately via unknown means. Inside of the Divide Window are multiple Repaired Crystals (リペアードクリスタル) that gathers on the bottom half of the Divide Window no matter what form GeizRevive is in. When the GeizRevive Ridewatch is flipped around, the Repaired Crystals go into the opposite block in order to repair its system from any damage incurred.
 * Pict Face (ピクトフェイス) - A face within the GeizRevive Ridewatch's Divide Window. It informs people of what form the user is currently in.
 * Black Bumper Bezel (ブラックバンパーベゼル) - The frame that surrounds the Divide Window. In addition to high strength, it acts as a shock absorber, protecting inner mechanisms. Despite it's name, the Black Bumper Bezel is more of a dark metallic gray hue than an actual black color.

The Zi-OTrinity Ridewatch consists of the following parts:
 * Trinity Starter (トリニティスターター) - The startup button on top. By pressing it, the whole Ridewatch enters a standby mode.
 * Layered Lock Bezel (レイヤードロックベゼル) - The overall bezel. The Zi-OTrinity Ridewatch is divided into three layers; each layer providing protection for inner parts, as well as locking functions outside control range.
 * Pict Window (ピクトウィンドウ) - The graphic imprinted on the Zi-O Trinity Ridewatch; displays Zi-OTrinity's face. It can holographically transmit information.
 * Unite Ryuzer (ユナイトリューザー) - The ability release valve located on the right side. By rotating it, the Zi-OTrinity Ridewatch opens up layer by layer, releasing more power per layer.
 * Oversight Clock (オーバーザイトクロック) - A clock face that extends over the Ziku-Driver's middle section. As the Unite Ryuzer is turned, each layer of the Zi-OTrinity Ridewatch is flipped, forming the Oversight Clock. By aligning itself with the Ziku-Driver's axis, the Driver's processing power is increased 1.5 times. This allows the user to safely use the high-impact Zi-OTrinity Ridewatch.
 * Trinity Grip (トリニティグリップ) - The Zi-OTrinity Ridewatch's overall exterior. The shape stabilizes the rotation motion of the Wake Bezel and loading of Ridewatch into the Ziku Driver. Out of all the preceding Ridewatches (and Miridewatches), it boasts the most protective strength.

Functionality
The Wake Bezel is turned 90 degrees clockwise, causing its arrow to face the direction that it is inserted into the respective slot on the Ziku-Driver. It activates when the Ride On Starter is pressed, and it is inserted into its corresponding slot on the Ziku-Driver before it was rotated 360 degrees to transform. Zi-O and Geiz's personal Ridewatches are inserted into the D '9 Slot to access their base forms, and Ridewatches based on past Kamen Riders are inserted to the D '3 Slot to access Rider Armor forms based on those Kamen Riders.

However, some Ridewatches lack a Wake Bezel, in which case the Ride On Starter is pressed before being inserted into the Ziku-Driver.

A Miridewatch works similarly to a Ridewatch. However, due to a lack of a Wake Bezel, the Miridewatch is activated merely be pressing the Miride On Starter before inserting it on the BeyonDriver. Pressing the Miride On Starter again will open the Miridewatch's Gate Activator, exposing the Send Projector and allowing the Beyondriver to be closed.

Special Ridewatches have extra steps to activate. For example, the Zi-O Ridewatch II's Ride On Starter II is pressed before being split into two pieces by the Split Ryuzer. The Ride On Starter II is pressed again before both halves are entered into the Ziku-Driver.

The GeizRevive Ridewatch, after pushing the Revive On Starter button, can be inserted into the Ziku-Driver to transform into Kamen Rider GeizRevive. To change forms, the user merely rotates the entire Ridewatch's face without removing it.

List of Ridewatches
{{#tag:tabber| Personal= {{#tag:tabber| Zi-O= {{#tag:tabber| Zi-O= {{#tag:tabber| 1={{Quote|(Digital beeping) Zi-O!|Activation announcement|Kamen Rider Zi-O}} {{!}}-{{!}} 2={{Quote|{{nihongo|The clock Rider who fights with Ridewatches is... (Clock ticking noise) Zi-O!|ライドウォッチで戦う時計のライダーは…ジオウだ！|Raidowotchi de tatakau tokei no Raidā wa… Jiō da!}}|Secondary activation announcement|Kamen Rider Zi-O}} {{!}}-{{!}} 3={{Quote|{{nihongo|The Kamen Rider of 2018 who sparks the battle with previous Riders is...(Clock ticking noise) Zi-O!|歴代ライダー達と戦いを繰り広げる2018年の仮面ライダーは…ジオウだ！|Rekidai Raidā tachi to tatakai o kurihirogeru 2018 nen no Kamen Raidā wa… Jiō da!|}}|Secondary activation announcement (Climax Scramble Zi-O ver.)|Kamen Rider Zi-O}} {{!}}-{{!}} 4={{quote|{{nihongo|Congratulations! The lucky owner who gets this special Ridewatch is...(Clock ticking noise) you!|コングラチュレーション！このスペシャルなライドウォッチを手に入れた幸運の持ち主は…君だ！|Kongurachurēshon! Kono supesharuna Raidou~otchi o teniireta kōun no mochinushi wa… kimida!}}|Secondary activation announcement (Aurora Plating ver.)|Kamen Rider Zi-O}} {{!}}-{{!}} 5={{Quote|Time Mazine!|Time Mazine summoning announcement|Kamen Rider Zi-O}} {{!}}-{{!}} 6={{Quote|Rider Time! (Electronic beat) Kamen Rider Zi-O!|Transformation announcement|Kamen Rider Zi-O}} {{!}}-{{!}} 7={{Quote|Finish Time! Time Break!|Finisher announcement|Kamen Rider Zi-O}} }} {{nihongo|Zi-O Ridewatch|ジオウライドウォッチ|Jiō Raidowotchi}}: The personal Ridewatch of Kamen Rider Zi-O accesses his default form, as well as being used for all his other forms except Zi-O II. It is dated 2018.
 * In the Climax Scramble ver., the screen will show "GAME" instead of "Zi-O" and "2018"

Unused Ridewatches
The DX Ziku-Driver toy can be hacked via pin combinations to reveal the names of possible Ridewatches with no confirmation on their appearance in the show, listed as follows:

Portrayal
The Ridewatches are voiced by Rikiya Koyama (小山 力也), who previously voiced Paradox Roidmude in Kamen Rider Drive: Surprise Future, Kamen Rider Bujin Gaim in Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle and physically portrayed Joe the Haze in Kamen Rider Black RX. He also voiced other equipment in Kamen Rider Zi-O, and Oma Zi-O himself. The singing portions of the Ridewatches' transformation announcements are voiced by Yohei Onishi (大西 洋平).

The transformation announcements of Legend Rider Ridewatches also recycle audio from the original Riders' transformation announcements, voiced by other Rider Equipment Voice Actors.
 * The BuildArmor's transformation announcement reuses the Build Driver's "Best Match" announcement voiced by KORBY.
 * The Cross-Z Ridewatch reuses the "Wake up burning!" portion of the Cross-Z Dragon's transformation announcement.
 * The Cross-Z Magma and Grease Blizzard Ridewatches reuses "Gokunetsu Kinniku" and "Gekitou Shinka" from the Cross-Z Magma Knuckle and Grease Blizzard Knuckle respectively.
 * The Grease and Rogue Ridewatches reuse the Sclash Drivers' "Robot Jelly" and "Crocodile" announcements respectively, voiced by Norio Wakamoto.
 * The Evol and Mad Rogue Ridewatches reuse the Evol-Driver's "Evolution" and "Evol Match" announcements respectively, voiced by Tetsuo Kanao.
 * The Evol Black Hole Ridewatch reuses "Revolution" from the Evol-Driver when the Evol-Trigger is inserted.
 * The Ex-AidArmor and GenmArmor's transformation announcements reuse the Rider Gashats' "Level up!" announcement, voiced by Hironobu Kageyama.
 * The Muteki Armor Ridewatch reuses the "Hyper Muteki" announcement from the Hyper Muteki Gashat.
 * The same is true of the Brave, Snipe, and Lazer Ridewatches. The Para-DX Ridewatch instead reuses the "Mazaru up!" announcement from the Gashat Gear Dual.
 * Both Cronus and Poppy Ridewatches reuses "Buggle Up" from the Gashacon Bugvisor II.
 * The GhostArmor and SpecterArmor's transformation announcements reuse the Ghost Driver's "Kaigan!" announcement, voiced by m.c.A·T.
 * The Necrom Ridewatch reuses the Mega Ulorder's "Tengan" announcement, voiced by Peter von Gomm.
 * The DriveArmor's transformation announcement reuses the Drive Driver's "Drive!" announcement, voiced by Chris Peppler.
 * The Mach and Chaser Ridewatches reuse the "Mach!' and "Chaser!" announcements respectively from the Mach Driver Honoh, which is speculated to be voiced by George Williams.
 * The GaimArmor and ZangetsuArmor transformation announcements reuses the Sengoku Driver's "Soiya!" announcement, voiced by Seiji Hiratoko.
 * The Baron Ridewatch reuses the "Come On!" announcement from the Sengoku Driver.
 * The Ryugen Ridewatch reuses the "Hai!" announcement from the Sengoku Driver.
 * The WizardArmor's transformation announcement reuses the WizarDriver's "Please" announcement, speculated to be voiced by Wizard narrator Hiroaki Hirata.
 * The Beast Ridewatch reuses the "Open" announcement from the Beast Driver.
 * The FourzeArmor's transformation announcement reuses the Fourze Driver's 3-2-1 countdown announcement.
 * The Meteor Ridewatch reuses the Meteor Driver's "Meteor, ready?" announcement.
 * The OOOArmor's transformation announcement reuses the O Scanner's "Taka! Tora! Batta!" announcement, voiced by Akira Kushida.
 * The Ridewatch for the Tajadol variant likewise uses the "Taka! Kujaku! Condor!"
 * The PuToTyra Ridewatch similarly uses the "Ptera! Tricera! Tyranno!"
 * The Birth Ridewatch reuses the gashapon popping sound from the Birth Driver.
 * The WArmor's transformation announcement reuses the Gaia Memories's "Cyclone! Joker!" announcement, voiced by Fumihiko Tachiki.
 * The FangJoker Ridewatch reuses "Fang!" from the Fang Memory.
 * The Xtreme Ridewatch reuses "Xtreme!" from the Xtreme Memory.
 * Similarly, the Accel and Eternal Ridewatches reuses the Gaia Memories's "Accel!" and "Eternal!" announcements.
 * The DecadeArmor's transformation announcement reuses the Decadriver's "KamenRide!" announcement, voiced by Mark Okita.
 * The KivaArmor's transformation announcement reuses Kivat-bat the 3rd's "Gabu!" announcement, voiced by Tomokazu Sugita.
 * The Den-OArmor's transformation announcement reuses the Den-O Belt's "Sword Form!" announcement.
 * The Zeronos Ridewatch reuses the "Altair Form!" announcement from the Zeronos Belt.
 * The KabutoArmor's transformation announcement reuses the Kabuto Zecter's "Change Beetle!" announcement, voiced by Surage Gajria.
 * The BladeArmor's transformation announcement reuses the Blay Buckle's "Turn Up!" announcement, voiced by Takeshi Sasaki.
 * The Chalice Ridewatch reuses the "Change" announcement from the Chalice Rouzer.
 * The FaizArmor's transformation announcement reuses the Faiz Phone's "Complete!" announcement, voiced by Takehiko Kano, as does the Kaixa Ridewatch with an additional "Standing By..." announcement from the Kaixa Phone.
 * The Faiz Axel Ridewatch reuses "Start Up" from the SB-555W Faiz Axel watch.
 * The Faiz Blaster Ridewatch reuses "Awakening" from the SB-555T Faiz Blaster.
 * The RyukiArmor and KnightArmor transformation announcements reuses the "Advent!" announcement from the visors, voiced by Tsuyoshi Koyama.
 * The Ryuki Survive Ridewatch reuses "Survive" from the visors.
 * The RyusoulgerArmor transformation announcement reuses the "Ryu So Cool!" announcement from the Ryusoul Changer, voiced by Tomokazu Seki. In addition, the "Ken Bom" in the finisher announcement is reused from the Ryusoul Ken.