LEAP Digital Chess Clock Timer With 29 Timing Modes 6 Chess Modes: Countdown, Bonus (Fisher), Delay, Restrict, Time and Byo-yomi With the 6 chess modes, a total of 29 different types of modes pre-set in the machine 5 Button Operation: on/off, +, -, Alarm, Start/Stop/Set Passed ISO9001:2000 International Quality System Authentication Suitable for both home use and Tournaments