1、SUITABLE FOR A VATIETY OF TWO PLAYER GAMES: This chess clock suitable for chess, Chiness chess and I-GO. Using the chess clock, players can manage the game time and make decision effictively and effciently. 2、FEATURES: This chess timer has multi functions: time, bonus, delay, move, countdown, count up,alarm function. Different countdown time can be set on both sides of the chess clock, and the time can be modified at any time during the game. (NOTE: Different delays/bonus times can't be set.) 3、EASY OF USE: There are simple using istruction on the button of the chess clock timer offcial, follow the instructions to select the mode you need directly. You can start the game at the default time without complicated settings! The size of this chess clock is 1*1 inche, which is very convenient to carry. 4、HIGH QUANLITY: This chess timer clock made of premium and durable ABS plastic, the seesaw at the top, which has been tested for thousands of times, ensures that players have a good game experience. 5、MULTI-APPLICABLE SITE: The chess clock digital is a perfect chess accessory. Whether you want to use it in clubs, school teaching or family entertainment, it can provide more challenging and bebeficial experience for players. Specifications: Material: ABS Item Size: 135 * 100 * 40mm / 5.31 * 3.94 * 1.57in Item Weight: 141g / 4.97oz Package Weight: 227g / 8.01oz Package Size: 14.7 * 10.5 * 6.2cm / 5.78 * 4.13 * 2.44in Package List: 1 * Chess Clock 1 * User Manual (English)