CHESS CLOCK: Professional Digital Timer with Count up / Countdown Timer, Maximum up to 10 Hours, Available for Chinese Chess, International Chess and Other Board Game. ALARM FUNCTION: This chess clock will make an alarm clock when time runs out. You can turn on/off the alarm clock, easy setting, lightweight, memory setting. LARGE HIGH DEFINITION DISPLAY: This chess clock has feature as large high definition display, eye-catching colors, accurate.,easy to read. ECO DURABLE CHESS CLOCK: This chess clock is made of premium electronic components and ABS shell, which is eco-friendly and durable. battery: 2 AAA batteries(Does not contain) Colour: black Material: plastic Size: 14 x 8.8 x 4.5cm Package Contents: 10 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.