Specification:

Operating Voltage	DC 3.7V - 4.2V
Operating Current	4mAh
Low Frequency Wave (Dragonfly)	17HZ - 20HZ
Frequency Wave (Male Mosquito)	4.5KHZ - 4.9KHZ
Ultrasound (Bats)	40KHZ
Working Time	80 - 90 Hours (4 Days)
Night Use Time	8 - 9 days

Features:
1. Ultrasonic physical repellent, no radiation, non-toxic, harmless.
2. No need to add any material, working life more than 5 years.
3. Power consumption 0.5W.
4. Can be used in a wide range.

Package Included:
1 x Mosquitoes Repellent Bracelet