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 with Rider Powers within himself/herself.
 * 2) Hard-counter the Another Rider.
 * 3) The Rider Powers within the Another Rider will take the form of Ridewatches and will eject out of his/her body.

Method 3
In this method, the Transformation device of a Kamen Rider either transform into Ridewatches (like Decade, Hibiki, Kabuto, Den-O) or transfer their powers into a blank Ridewatch (like Kuuga, Ryuki, Knight, Agito). In majority of the cases, the Rider performs the creation with his own will, generally while giving their powers to Sougo, or the powers are taken away by someone, like Kuuga and Agito. In cases of Kabuto, Hibiki, Ryuki and Knight, the creation took place itself for unknown reasons.

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 any 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 that all the Mirror Riders' powers were restored in 2019 in another Rider Fight. Also, because the Time Jackers were able to infuse Kamen Rider Ryuga's powers into the Anotherwatches, they too seem to have a way to bypass this alternate timeline restriction as well.

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 Miridewatch

 * 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 Miridewatch

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

Kikai Miridewatch

 * 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.

Ginga Miridewatch

 * Of the four future Riders, Ginga is an anomaly, and as such the creation of Another Ginga would be impossible. The three main Riders are forced to collaborate with the Time Jackers in order to defeat Ginga. With the alien Rider defeated, Swartz seals Ginga's powers in a blank Miridewatch before Black Woz snatches the Ginga Miridewatch in the process.

Special/Personal Ridewatch Creation
Each Ridewatch formed in this manner either possess a unique standby tune, or insert into the D '3 slot of the Driver with music accompanying the standard tune.

Zi-O Ridewatch II

 * Created from the fusion of two Zi-O Ridewatches from the Real World and Mirror World.

GeizRevive Ridewatch

 * Created from the fusion of the Shinobi, Quiz, and Kikai Miridewatches.

Zi-OTrinity Ridewatch

 * Created from the fusion of the Zi-O II, GeizRevive, and the Woz Watches.

GrandZi-O Ridewatch

 * Created once all 19 Main Heisei Ridewatches are collected.

Tsukuyomi Ridewatch

 * Created by Ohma Zi-O by infusing some of his powers into a blank Ridewatch.

Ohma Zi-O Ridewatch

 * Manifested after Zi-O meets Ohma Zi-O and receives guidance from the latter.

Power Restoration
In a manner similar to, if a legend Rider holds and activates a corresponding Ridewatch, they will instantly regain their powers. In the case of Agito, the Ridewatch will turn into energy and apparently turn back into the Alter Ring. In Hibiki’s case, the transformation sequence will immediately occur when this happens. They can later volunteer to turn their powers back into the Ridewatch. The same instance happened to Tsukasa when he lost his powers to Swartz, leading him to request Sougo to return the Decade Watch, which contained half of his powers, and sucessfully regained his Neo Decadriver.

Destruction
In Episode 47, as of the result of the further space-time anomalies, each Heisei Rider history will crash into reality, represented by each Ridewatches' destruction, turning grey in color and cracked. As a result, previous Heisei era monsters and surprisingly architectural locations (Futo Tower & Yggdrasill Tower) were summoned, crashing into each other.

Design
A standard 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.

A standard 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.

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 depending 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 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.

The Zi-OTrinity Ridewatch, after being inserted into the Ziku-Driver's D '3 slot, requires the Unite Ryuzer to be turned twice, revealing faces of Kamen Riders, Geiz and Woz before activating the transformation into Zi-OTrinity. The finisher is determined by how many times the Trinity Starter is pressed, from once to thrice, before rotating the Driver.

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 supesharu na Raidowotchi o te ni ireta 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, Zi-O Ohma Form and Ohma Zi-O. It also forms the headcrest of Zi-O Ohma Form. It is dated 2018.
 * In the Climax Scramble ver., the screen will show "GAME" instead of "Zi-O" and "2018"

Screens
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:

Poll Candidates
The following Riders/forms were unsuccessful candidates for Bandai's Ridewatch poll.

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 Ohma Zi-O himself. The singing portions of the Ridewatches' transformation announcements are voiced by Yohei Onishi (大西 洋平), who is a singer who performed various songs. The Mirror World Zi-O Ridewatch is voiced by So Okuno, in character as Sougo Tokiwa (Mirror World)

The Miridewatches are voiced by AFRO (アフロ), who also voiced other Kamen Rider Woz's equipment in Kamen Rider Zi-O.

The transformation announcements of Legend Rider Ridewatches also recycle audio from the original Riders' transformation announcements, voiced by other Rider Equipment Voice Actors. The Miridewatches reads the Future Riders' catchphrase and transformation announcement instead.
 * The Zero-One Ridewatch's transformation announcement reuses the Hiden Zero-One Driver's "Progrise" announcement voiced by Maynard and Blaise Plant of Monkey Majik.
 * 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 Cross-Z Charge, Grease and Rogue Ridewatches reuse the Sclash Driver's "Dragon Jelly", "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-Aid, Brave, Snipe, Lazer and Genm Ridewatch's transformation announcements reuse the Rider Gashats' "Level up!" announcement, voiced by Hironobu Kageyama.
 * The Brave Legacy Gamer Ridewatch also reuses "Level Up!" as it's transformation announcement.
 * The Snipe Simulations Gamer Ridewatch reuses "Dual Up!" from the Gashat Gear Dual β.
 * The Ex-Aid Maximum Gamer Ridewatch reuses "Level Max!" from the Maximum Mighty X Gashat.
 * The Ex-Aid Muteki Gamer Ridewatch reuses the "Hyper Muteki!" announcement from the Hyper Muteki Gashat.
 * The Para-DX Ridewatch reuses the "Mazaru Up!" announcement from the Gashat Gear Dual.
 * The Genm Zombie Gamer Ridewatch reuses "Buggle Up!" from the Gashacon Bugvisor.
 * 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 Amazon Omega Ridewatch transformation announcement reuses the entire transformation jingle from the Amazons Driver, albeit arranged differently. The Amazons Driver has the "Omega" announcement followed by the jingle, while the Ridewatch reverses it.
 * The DriveArmor's transformation announcement reuses the Drive Driver's "Drive!" announcement, voiced by Chris Peppler.
 * The Drive Deadheat Ridewatch reuses "Deadheat!" announcement and the Drive Formula Ridewatch reuses "Type Formula!", Both from the Drive Driver.
 * 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 Decade and Diend Ridewatches reuses the Decadriver and Diendriver's "KamenRide!" announcement, voiced by Mark Okita as their transformation announcements.
 * The Decade Complete Ridewatch reuses the "Final KamenRide!" announcement from the Final Kamen Terminal K-Touch.
 * 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 Hibiki Ridewatch reuses the "Ding" sound effect from the Henshin Onsa.
 * The Ibuki Ridewatch reuses the whistling sound effect from the Henshin Onibue.
 * 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 Ridewatches from Kamen Rider Ryuki reuses the "Advent!" announcement from the visors, voiced by Tsuyoshi Koyama as their transformation announcements.
 * The Ryuki Survive and Knight Survive Ridewatches reuses "Survive" from the Visors.
 * The Agito and Agito Shining Ridewatches reuses the power up sounds from the Alter Ring.
 * The Kuuga, Kuuga Amazing Mighty and Kuuga Ultimate Ridewatches reuses the power up sounds from the Arcle.
 * 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.