Function introduction
1: Forward and countdown timer function, can display minutes and seconds
2: Countdown timer range (99 minutes 59 seconds)
3: When the countdown timer reaches zero, the sound prompt is about 30 seconds
Use settings
1. Press the "M" key to adjust the required minutes (press and hold this key for 3-5 seconds, the minutes will increase rapidly, and cycle from 0-99-00)
2. Press the "S" key to adjust the required number of seconds (press and hold this key for 3-5 seconds, the minutes will increase rapidly, and cycle from 0-59-00)
3 Press the "ST/SP" key, the timing starts, press again to pause
4. Press "M and S" at the same time to reset the set value to zero
5. When the data returns to zero, press the "ST/SP" key, and the forward timing starts
When the timer display is unclear or the sound becomes weak, you need to replace the battery