Multi Function: This advanced chess clock features single or multi-period countdown, bonus time, restricted moves or time, delay, and byo-yomi time functions. Ideal for chess, Go, Chinese chess, and other two-player games requiring timed play. Modify at Any Time: The LEAP chess timer offers flexible operation, allowing time or move settings to be checked or adjusted during gameplay. Each side can have different timing rules configured as needed. Memory Function: After turning the chess clock off and back on, it retains the last used timing rule. The data save mode preserves settings after changes to rules [0138]. Easy Set and Operate: With 38 preset timing configurations, this chess clock is easy to use right out of the box without complex setup. Custom mode is also available for setting multi-period countdown, move limits, and bonus time. Portable and Durable: Constructed from high-quality, durable ABS material, this digital chess timer has a compact size of 6.49 x 3.74 x 2.44 inches, making it easy to carry in a bag for use anywhere. Never start your game without a chess clock! Color: Black Material: ABS Battery: 1 x AAA (not included) Package Contents: 1 x Chess Clock Note: The package includes only the items listed above. Other products are not included. Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance is +/- 1-3 cm.