2PCS Handheld Stopwatch Sports Stopwatch Timer Coach Referee Special Waterproof

Handheld multi-function stopwatch sports stopwatch timer coach referee special 2-pack

【Size】8.3*6.2*2.3cm（Please allow 1-3cm differences due to manual measurement） 【Material: Plastic】ABS 【Features】Life waterproof 【Powered by】button battery (included) 【Product use】Widely used for time setting of lunch break, beauty, sports testing, cooking and other activities 【Instructions】 1. Press the M key to set the position of the "minute" 2. Press the S key to set the position pointed to by "seconds" 3. Press the M key and S key at the same time to display the reset to zero 4. Press the START/STOP button to start or stop the time 5. An alarm occurs when the set time counts down to "zero" seconds 6. Press any key to stop the alarm 【Battery replacement】 1. Replace the battery when the timer display is unclear or the sound is weakened 2. Use a coin cell battery 3. Slide open the battery door, take out the old battery, separate the positive and negative poles of the fresh battery and put it in, and push the battery door back to its original position. 【Package Included】2* Multi-Function Digital Sports Timer（button battery included）