Features: 1. 10‑135Khz (8 band ultrasonic infinite loop scanning) physically repels maids, fleas, mice and mosquitoes, and repels them safely without chemicals. 2. Ultrasonic covers a wide area, and long term use can achieve ideal results and long service life. 3. Ultrasonic physical drive, only effective against pests, safe and environmentally friendly, babies, pregnant women, the elderly, etc. or pets can be used with confidence. 4. USB ultrasonic mosquito repellent works at the same time to light up the color night light. 5. Use the USB cable to easily operate and charge; the detachable collection tray is hygienic and easy to clean. Specification: Item Type: Insect Repellent Material: ABS Size: Approx. 4.2 x 3 x 1cm / 1.7 x 1.2 x 0.4in Weight: Approx. 16g / 0.6oz DC: 5V / 1-2A Rated Power: 0.008-0.015W Working Current: 2-3.5mA Acoustic Frequency: 10-135KHz Effective Range: 10-80㎡ Application: Car, Outdoor Travel, Camping, Fishing, Outdoor Work, Baby Products, Home and Indoor, Safety and Environmental Protection Are Harmless to People and Pets. Package List: 1 x Ultrasonic Pest Repeller 1 x User Manual Features Advanced Ultrasonic Technology: Repel pests like insects, mice, and mosquitos with the 10-135Khz ultrasonic frequency, without using harmful chemicals. (Insect Repeller, Mouse Repeller, Electronic Insect Repeller) Wide Coverage and Long-lasting Effect: The ultrasonic waves cover a large area, providing optimal results and a prolonged service life. (Repel Cockroaches, U S B Ultrasonic Mosquito Repeller) Safe and Environmentally Friendly: Utilizing ultrasonic physical drive, this pest repeller is safe for babies, pregnant women, the elderly, and pets. (Insect Repeller, Mouse Repeller, Electronic Insect Repeller) Convenient USB Operation: Easily operate and charge the device using the USB cable. Plus, enjoy a colorful night light while repelling mosquitos. (U S B Ultrasonic Mosquito Repeller) Hygienic and Easy to Clean: The detachable collection tray ensures cleanliness and makes cleaning hassle-free. (Insect Repeller, Mouse Repeller, Electronic Insect Repeller)