Multi Function: This advanced chess clock equipped with single or multi period countdown, , restricted moves or time, delay and byo yomi time function. Great for chess, I-GO, Chinese chess, and other games that require 2 players. at Any Time: LEAP chess timer is flexible to use, time or move can be checked or modified during . The counting rules on both sides can also be set to different parameters as required.Memory Function: Turn off the chess clock and on again, keep the timing rule last used shutdown. Data save mode can save the data after [01-38] rules changed.Easy Set and Operate: There are 38 preset parameter timing rules of the chess clock, it's convenient and can directly use without complicated setting, or can use the custom mode to set the parameter of multi period countdown, restrict moves and .Portable and Durable: This digital chess timer is , made of durable ABS material. The 6.49x3.74x2.44 inch size can put in your bag and bring to anywhere. 't start your game without chess clock!Color: blackMaterial: ABS1 x AAA battery not includedPackage Contents:1 x Chess Clock