DT05ah Mechanical International Chess Clock(Black) imak (The battery needs to be

(The battery needs to be aligned with the positive and negative poles

600RPM-19999RPM (4 Stroke)

Observation stand x 2

Illumination range: 0-30000 LUX Brightness

5 sets of taps

DT05ah Mechanical International Chess Clock(Black) imak (The battery needs to be1. No battery needed, clockwork drive, easy to use, similar to quartz clock operation 2. Divided into left and right movements, each full spring can last for no less than 36 hours, and the daily error of travel time accuracy is about 3 minutes 3. Material: plastic case, zinc alloy movement 4. Maintenance: The chess clock should be protected from contact with corrosive substances, avoid exposure to sunlight, rain, drop and close to strong magnetic