Detailed Product Description Hours, minutes, seconds, year, month, day and week of shows, the annual range of 2000 ~ 2099 ... , 99 groups stopwatch records check, the largest time-23 hours 59 minutes 59 seconds to stop Countdown function, the biggest countdown 99:59 ... Contrast can be set (you can not do not) 3 seconds EL backlight Low Voltage prompts Japan CR2032 lithium battery