Features: 1) Large LCD screen: 53.9 x 47.1mm 2) Mode: game A and game B 3) Time and date function 4) Alarm function 5) Game function 6) Sound hint 7) Million puzzles for you to conquer 8) Power control 9) At game mode, auto power off after 8 minutes without operation / manual power on and off 10) Power supply: 2 AAA 2 alkaline batteries 11) Dimensions (L x W x H): 72 x 116 x 21mm 12) Weight: 83g (without battery)