This chess clock with counting, count down, bonus, delay (fischer), alarm on/off, move counts & setting memory. Not only this digital timer allows checking moves for both players, but allow to adjust the rest of time. Available for International Chess, Chinese Chess, I-GO,and other type board games. Many tournament has used this clock for the competition.You can set up two different base time on both sides. Professional Digital Timer with Count up / Countdown Timer, Maximum up to 10 Hours. Bouns and Delay functions with Easy Setting, Light Weight, Setting Memoried. The Chess Timer, perfect chess game companion, easy to operate when play games with friends, family in bar, club, home. Colour:Blue Material:Plastic Size:13.8 x 8.8 x 4.5cm Package Contents: 5 x chess clock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.