M21 Ultrasonic Mosquito Repellent Bracelet Watch USB Rechargeable Anti Mosquito Repeller Wristband Kill Pest Insect Bug Repellent Wrist Watch Suitable for Adults and Kids

Features:
Pure physical sound wave mosquito repellent bracelet, does not contain harmful substances, non-chemical insect repellent, environmentally friendly and non-toxic.
Built-in rechargeable battery, long-lasting battery life, full battery standby time of about 3 months, continuous working time of about 3 days.
Multifunctional bracelet, adjustable three-speed mosquito repellent mode, clock display, suitable for different scenarios.
Bracelet design, easy to carry, with clock function, suitable for beaches, parks, camping, hiking, fishing and other places.
Fine structure design, silicone strap, waterproof life, no water will enter when washing hands or raining.