To transform into Kamen Rider Geats Boost Mark III, the user inserts this Raise Buckle to the DX Desire Driver (sold separately), and turns the handle to transform into said form. To transform into Kamen Rider Geats IX, the user splits the other half of the Raise Buckle and set both sides of it to the DX Desire Driver thus activating the transformation standby sound. Press the button and do a Revolve On to the belt to unfold the parts, then pull the lever to transform into Kamen Rider Geats' final form.
Speaking of said sound effects, this version will also include the long transformation sound when Geats IX first make its debut, as well as additional sound effects when transforming into Boost Form Mark III, and additional sound effects when the Boost Time special move is activated. Finally, it will also include lines coming from the Ace (played by Hideyoshi Kan) and Tsumuri (played by Kokoro Aoshima) in which they interact and even say some of their iconic lines. It will also include some of Ace's lines coming from the recent Kamen Rider Geats: Jyamato Awaking film.
This Premium Bandai web exclusive item cost 5,940 yen, and is set for an October release. Pre-orders will end on June 24th.