Description of DT20 Digital Chess Clock
The most of  timing rules of digital chess clock.

1. Digital chess clock ,durable plastic casing

2. Light and easy to carry

3. Suitable for home and competitions

4. Positive timing, maximum 10 hours

5.Presettable countdown timer, maximum 10 hours;

6.Alarm when the match is oven;

7,Fit for different kinds of chess matches with count up and count down

Please see the manual of DT20 digital chess clock in /pic/dt20manual.pdf