Feature 1、This is a digital chess clock, suitable for chess, Chinese chess, I-Go games and other games. 2、There are 8 types (67 pcs) of timing rules totally including countdown for single stage/multiple stages, award, time limited, time delay, Byo-yomi, positive timing, etc. 3、Different timing parameters can be set respectively for each of left and right sides 4、The timing value for both sides can be adjusted during any match. 5、The rule parameters representing the rules for the last match prior to power-off will be used as those for the first match of the next power on. Features: This is a digital chess clock, suitable for chess, Chinese chess, I-Go games and other games. There are 8 types (67 pcs) of timing rules totally including countdown for single stage/multiple stages, award, time limited, time delay, Byo-yomi, positive timing, etc. Different timing parameters can be set respectively for each of left and right sides The timing value for both sides can be adjusted during any match. The rule parameters representing the rules for the last match prior to power-off will be used as those for the first match of the next power on. Specifications: Material: ABS Size: 15*8.5*7.3cm/ 5.9*3.3*2.9in Weight: 278g/ 9.8oz Package List: 1 * Digital Chess Clock Package List 1 * Digital Chess Clock