M30 Ultrasonic Mosquito Repellent Watch Children Outdoor Mosquito Repellent Bracelet(Blue)

1. Function: sonic mosquito repellent
2. Size: about 32x52x78mm
3. Weight: about 36.5g
4. Working time: 150 hours
5. Charging time: about 30 minutes
6. Input current: 5V/0.5A
7. Output frequency: 34Hz-70KHz
8. Features: efficient driving, smart chip, usable for pregnant and infant, outdoor use, long-lasting battery life, waterproof life
9. Battery capacity: 100mah
10. Power supply mode: USB
11. Applicable places: seaside, parks, camping, mountaineering, fishing, etc.
12. Principle of mosquito repellent: The bracelet achieves the effect of repelling mosquitoes by imitating the sounds that female mosquitoes hate, such as the sounds of male mosquitoes and dragonflies.