Press "ROTATE" to adjust the number at the top of the screen to select a game. The number "01" is a classic brick game. Game speed and number of levels and difficulty can be adjusted. After selecting the game you want to play, press the right arrow key to adjust the speed before the game starts, press the left arrow key to adjust the difficulty level, and press the up/down key to adjust the level . The game can be paused and can be played again next time without restarting. Operation method: first press the "S/P" button to pause the game, then press the "ON/OFF" button to power off, the next time you play, press the button first "ON/OFF" to power on, then press "S/P" button first Start the game.Powered by 2 AA batteries, 2 AA batteries can be used for 1 month (depending on battery quality). Product weight/size: 90g/18x8x2cm; Product weight/size with package box: 110g / 18.7 x 8.3 x 2.7cm;