Features:
To repel mosquitoes with the power of ultrasound.
It's designed with a small light for your convenience which can light for your in darkness.
You can turn the light on only with a press on the switch.
It works for about 1-2 meters / 3.28- 6.56ft. Continuous emitting of sonic wave of ultrasonic can last for about 400 hours and the small light can be used for about 30 minutes continuously.

Specification
Type:Electronic Ultrasonic Key Ring
Material: Plastic electronic components
Color:Silver
Quantity:1pc
Item Size:5..5x3.5x1.5cm/2.2x1.4x0.6(L*W*H)
Net Weight: 20g/0.7oz

Package:
1*Electronic Ultrasonic Key Ring