Feature 1、Timing rules includes BASIC, BOUNS, DELAY, BYO-YOMI and COUNT-UP, it automatically switches to the counting-up mode after countdown. 2、User-defined time can be set up to 9:59:59, different timing parameters can be set for both sides, and the time can be modified during the game. 3、It can automatically save the parameters set before shutdown. 4、Step recording function: you can view or modify the number of step taken uo to 999 step. 5、Sound and shutdown function: you can turn/off the voice prompt, or turn on/off the chess clock. An nice accessory for limited time events, the multifunctional chess clock helps you accurately time. Meet your game timing needs in all aspects. Features: Timing rules includes BASIC, BOUNS, DELAY, BYO-YOMI and COUNT-UP, it automatically switches to the counting-up mode after countdown. User-defined time can be set up to 9:59:59, different timing parameters can be set for both sides, and the time can be modified during the game. It can automatically save the parameters set before shutdown. Step recording function: you can view or modify the number of step taken uo to 999 step. Sound and shutdown function: you can turn/off the voice prompt, or turn on/off the chess clock. Specifications: Main color: black Main material: ABS Battery: 2 * AA battery (not included) Item size: 140 * 85 * 54mm / 5.5 * 3.3 * 2.1in Item weight: 152g / 5.4ounce Package size: 145 * 95 * 50mm / 5.7 * 3.7 * 2.0in Package weight: 170g / 6.0ounce Packing List: 1 * Chess Clock Package List 1 * Chess Clock