Hrph Portable Mosquito Insect Killer Insect Electronic Repeller Hook Type Solar Ultrasonic with Compass Compass for assisting you to identify directions in outdoors Eco-friendly, non-toxic sonic mosquito repeller,Solar powered, no batteries needed Repel mosquitoes by sound wave,Protect you from mosquitoes and insects, etc With ON-OFF switch, easy to use,Fit for outdoor activities such as fishing, hiking, camping, gardening, etc Mini, lightweight and portable,Can be clipped on your clothes, bag, bed and table with the hook