Item Type: Mini Hamster Memory Game Toy Material: Plastic Battery type: 3pcs coin cell batteries (shipped with batteries) Battery capacity: 145mAh Package List 1 x Mini Hamster Memory Game Toy 1Hamster Button Game Machine Toy: These portable game keychains can not only be used as an exquisite accessory for keys, but also hamster button game classic and interesting game of fighting moles. 2Exercise the Brain: Fashionable and beautiful, made of excellent materials, not afraid of the baby fell broken. Press the button with the light, and then the game gradually increase in difficulty, exercise the brain response ability and visual ability. 3Mini Size: Each portable hamster button toy game machine with hanging keychain is small size, suitable for handheld, built in coin battery, no need to bring your own battery, easy to carry and store. 4Classic Design: The classic hamster button game toy key chain is lightweight and easy to carry, with hanging keyring, which can be easily fixed on the key, school bag or pocket. 5Novel Gift: The classic design of the keychain of this hamster button game machine is very suitable for boys and girls. It will be welcomed by most people. You can give them as gifts to friends or family.