1. Countdown function: the maximum countdown can be 9 9 minutes 59 seconds, and the countdown automatically returns to the set countdown time;
2. Positive timing function: positive timing time 9 9 minutes 59 seconds, loop positive timing;
3. After the countdown is completed, 30 seconds of sound sound prompts, loud sound, positive timing without noise function;
4. There are magnet, bracket and spare hanging hole on the back; It can be adsorbed on the metal surface or placed on the table, or hung.