Master Tournament Analog Chess Clock Timer

Powered by 1 x AA battery ( not included ) Practical Quarz Analog Chess Clock Available for Chinese Chess, International Chess and I-GO Press the left button, left timer stop timing and right timer begin timing, vice versa Press two buttons simultaneous to half, both timers are in stop state, insert the clip to make sure the stop state Made of electronic components + ABS shell, environmentally friendly and durable