Professional Digital Timer with Count Up/Count Down Available for Chinese Chess, International Chess, I-GO and other 2-player board games The chess clock timer is made of electronic components and ABS shell, environmentally friendly and . Requires two AA batteries (not included) Color: Blue Material: Plastic Size: 161x100x62mm 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 a little different from the real thing. The measurement allowed error is +/- 1-3 cm.