Description: Made of ABS shell and electronic components , environmentally friendly and durable. Adopts advanced high-performance and low-power chips, low energy saving, easy to use. Basic countdown time: Users can set the same/different basic countdown time for 2 players. The user can set a bell or mute as an alarm, and the bell will last for 10 seconds to end the game. Mode button: switch between ''clock mode'' and ''countdown mode''. Specification: 2 AA battery power supply (batteries not included) START / PAUSE button: start or pause, set the clock time. Reset button: press and hold for 3 seconds to recover. Clock function: display hours and minutes. Countdown function: can be used as a countdown game timer. Time limit: The user can set a time limit for each step. Increased time: Users can set a second reward for each step. Size Chart: Size: 175x110mm / 6.89x4.33inch Package Includes: 1 Piece Electronic Digital Chess Clock Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.