Item Type: Stopwatch Timer Color: As Picture Shown Material: ABS Battery Type: CR2032 Battery Capacity: 260mAh Weight: Approx.49g/1.7oz Battery: 2 x Button Batteries (with Built in Battery) Features: 1. Stopwatch Function 2. Segment Display Function 3. Hour, Minute, Second, Month, Day, Week Display Function 4. Alarm and Hour Alarm Function 5. Working Temperature Range -5-+50 Stopwatch Working Status 1. Single Time Interval Measurement: Press the S Key to Start, then Press the S Key to Stop, Press the R Key to Clear It, when the Tested Time Interval is 29 59.99", the Small Display Unit is Second the Long Measurable Interval Time is 23 H59 M59s. 2. Split Timing, Press the S Key to Start, then Press the R Key to Stop, and the Interval Time Will Be Displayed; Press the R Key Again, the Time Displayed at This Time Indicates That from the Beginning to the Second Time You Press the R Key Time Interval, ... As Above, It Can Be Measured for Multiple Periods of Time to Reset, After Pressing the R Key, Press the S Key Again, and then Press the R Key Again to Reset. Adjustment of Travel Time and Alarm Time 1. Adjust when the Alarm Occurs: Press the M Key to Display the Alarm State, Press the R Key to Select the Hour or Minute Flashing, and then Press the S Key to Adjust the Alarm Time. 2. Travel Time Adjustment: Press the M Key to Display the Running State, Press the R Key to Select the Hour, Minute, Second, Day, Month, and Week Flashing, Press the S Key for Minutes Don't Make Adjustments. Package List 1 x Stopwatch Timer This watch is not waterproof design, please do not use in water. 1Switching Mode: Single and switching time mode. Stop and switch time when continuing while totaling. 2Stopwatch Display: Stopwatch can display calendar and clock, hour, minute, second, week, month, day, optional 12 or 24 hours. 3Large Display: Stopwatch is professional equipment used by coaches and referees for swimming, running and football training. 4Stopwatch Function: Timing function, segment display function, alarm and hourly hour function, the working temperature range of the stopwatch is 5~+50. 5Handheld Sportwatch: Stopwatch is ergonomically designed, you will feel comfortable and flexible, when you press the button, you can feel that it is shockproof.