Product Description Material: plastic shell Colour: Black Quantity: 1 piece Package Contents: 1*Stopwatch 1. Quiet working state The referee stopwatch works silently during normal use time, providing you with a quiet use environment 2. Lagre LCD display + precise function can display minutes and seconds. Measure time to within hundredths of a second 3. Button rechargeable battery powered by 1*AG13 battery 4. Stainless steel referee whistle with lanyard High-quality stainless steel whistle is characterized by clear sound. With the detachable yellow lanyard, you can keep your hands away from any competitions, workouts and other sports 5. The multi-function timer stopwatch is lightweight and meets the requirements of most situations. Use as stopwatch, clock, chronograph and alarm clock. Suitable for many sports. Football, basketball, running, fitness, swimming, baseball, wrestling, taekwondo, etc. Instructions for using settings: 1 Stopwatch setting and use: Under normal time display, press the MODE button once, you will see the stopwatch state, press the START button (right button) again to start timing, you need to stop and press the START button again, and continue to press the START button again. To reset the time to zero, when the stopwatch is stopped, press the SPLIT key (left key) to reset the time to zero. 2 Alarm time setting: Under the normal time display, press the MODE button twice, you will see the alarm time setting state, then press the START button (right button) continuously to start adjusting, press the SPLIT button (left button), will transfer to the grading. 3 Time setting: Under normal time display, press the MODE button three times, you will see the seconds flashing, press the SPLIT button (left button), you will see the score flashing, then press the START button (right button) to put the score. After adjustment, press the SPLIT key (left key) to see the hours flashing, then press the START key (right key) to adjust the hours, press the SPLIT key (left key) to see the days flashing, then Press the START button (right button) to adjust the number of days, and do the same. After adjusting the number of months and weeks, press the MODE button to exit. Two recording methods of the stopwatch: in stopwatch mode, press the start button on the right and then the pause button on the left. This is the first time and then press the start button on the right. The stopwatch time will not move, but it is still the first time. Pressing the pause button on the left while timing is the second time.