Features1. These fun handheld games help improve brain skills and hand-eye coordination. Volume is adjustable and can be muted entirely. Requires 3x AAA batteries (not included).2. The Flash electronic games offer just the right amount of challenge for most people while developing hand eye coordination for kids and adults-not too easy or too hard. .3. You never have to stop the game to change a few batteries. The flashing cube is fully rechargeable 4. It offers a collection of one- and two-player games, complete with buzzing, beeping, exciting music, and voice-guided instructions and feedback from Mission Control. Includes the option to adjust the volume or mute it altogether.5. Size: 2.95 x 2.95 inch. The Ultimate Gift to be enjoyed by all ages for a lifetime of portable fun in any setting.SpecificationMaterial: ABSColor: Red, BlackSize: 7.5 x 7.5 x 7.5 cmWeight: 230 gPowered by: 3 AA Battery(Not Include)Package Include:1x LED Flashing Cubes