ALARM FUNCTION: This chess clock make an alarm clock when time runs out. You can turn on/off the alarm clock, easy setting, , memory setting. CHESS CLOCK: Professional Digital with Count up / Countdown , Maximum up to 10 Hours, Available for Chinese Chess, Chess and Other Board Game. LARGE HIGH DEFINITION DISPLAY: This chess clock has feature as large high definition display, eye-catching colors, accurate.,easy to read. ECO CHESS CLOCK: This chess clock is made of premium electronic components and ABS shell, which is eco-friendly and .