In both transformations, the user first presses the button on top of the Bat Vistamp and stamp it on the stamp side of the Two Sidriver to activate the transformation standby sound. Afterwards, the user slides the Vistamp in the Vistamp slot of the weapon, and press the trigger of the weapon to transform into either Kamen Rider Evil or Kamen Rider Live. After the transformation, you can remove the docked weapon and use it in battle! Other functions such as finishers and Genome Changes can also be activated by purchasing more Vistamps.
Lastly, the included Bat Vistamp is compatible with the DX Revice Driver (sold separately). The DX Two Sidriver cost 6,820 yen and is set for a November 20th release.