Chess Digital Timer Professional Stopwatch Board Clock Plastic Battery Powered Multifunctional Lightweight for Training Teaching Chess Digital Timer Professional Count Up Down Timer Plastic Battery Powered Multifunctional Lightweight for Family Personal Use Feature: 1. Multi-functional: it has 8 types of 42 timing rules and 42 preset rules, including single/multi-segment countdown, reward, time limit, delay per step, plus second, second reading, and positive timing, which are available on demand; You can change the preset values and save them in for easy reuse. 2. Professional props: The chess clock is in hand, and both parties can play the game according to the agreed rules, and enjoy the fun of competition wholeheartedly. 3. Rocker key: Rocker timing key. The side that is warped is timing. It has good hand feeling, fast response, convenient control, and is more suitable for fast chess. 4. Modifiable: The timing parameters of both sides can be modified during the competition. Each timing rule can modify timing parameters. (except positive timing) 5. Memory function: When the machine is turned off and then turned on, it can maintain the rules and parameters that have been contested before the machine is turned off. It can display the number of chess steps and mute. Specification: Origin: Mainland China Type: Chess Clocks Model Number: Chess Digital Timer Main material: ABS Product color: blue Package size: 161x100x62mm/6.34*3.9*4*2.44inch Gros weight of product: 245g Power supply mode: DC 3V power supply (excluding two AA batteries) Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1 x Chess Digital Timer _x000D_