... is available for Chinese Chess, Chess, Crossword game, A-math,I-GO game and other games, a slide switch on top can ... ;4.Auto-counting steps in match, special warning tone in I-GO game;5.Lock key design: It can avoid player misoperation ... Button for 3 seconds, you can start game again, no need to preset again.7.Shell Materials: ABS8.OEM, ODM, new functions ...