Digital Stopwatch Handheld LCD Sports Stopwatch Waterproof Training Timer Electronic Outdoor Running Chronograph Stop Watch Features: Hourly hour: can be turned on or off. Mute: can turn on or off the sound of the keys. Clock calendar: 24-hour clock, year, month, day and week display. Luminous display: with luminous button, press once to light up for 4 seconds. Alarm clock: daily alarm clock can be set, the alarm clock can be turned on or off. Stopwatch: 0.01 second accuracy, the longest time is 29 hours 59 minutes 59 seconds. Cycle time: the longest time is 29 hours 59 minutes and 59 seconds, and the reminder time can be set. Can be shut down: can be shut down when not in use, and then back on after shutting down, the memory is still. Countdown: The longest timer is 29 hours, 59 minutes and 59 seconds, and the reminder time can be set. Specification: Model: YS-728L Material: ABS Accuracy: 0.01 second Size: 80*68*18mm Screen size: 33*25mm Function: clock calendar / alarm clock / stopwatch / countdown / sound switch / shutdown function / luminous / 29 hours long timekeeping Battery: CR2032 button battery (included) Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3cm differences due to manual measurement. Package Included: 1x Digital Stopwatch