Brief introduction: 1. Countdown function: the countdown time setting range is 0~99 hours, 59 minutes and 59 seconds. 2. Circular countdown function: the countdown time setting range is 0~99 hours, 59 minutes and 59 seconds. 3. Positive timing function: from 0 positive timing to 99 hours, 59 minutes and 59 seconds. 4. Clock function: display "hour", "minute" and "second", and display the 12-hour system. 5. The countdown time of Settings can be stored for repeated calls. 6. When counting down to 0, the alarm will ring for one minute and the indicator light will flash for one minute. 7. There are three levels of undulating switches on the back of the product, and you can choose voice prompt, mute or shutdown. 8. Product size: 65 X 86.7 X 23.4 mm 9. Screen size: 46 X 20 mm 10. Net weight: about 58g. 11. Battery: two batteries of no.7.
