The mosquito repellent works by emitting ultrasonic frequencies that may deter mosquitoes. This bracelet utilizes sound waves in the range of 34Hz-70kHz, which are believed to create an environment less attractive to mosquitoes. It is designed as a non-chemical, physical repellent method, offering a safer and more environmentally friendly option for personal use. Suitable for indoor and outdoor activities such as camping, hiking, fishing, and park visits, it can be worn by adults, children, and the elderly. Product Features: - Non-chemical, physical mosquito repellent method - Safe and eco-friendly design - Suitable for use by children, adults, and the elderly - Ideal for various outdoor and indoor environments - Rechargeable with USB cable Specifications: - Product Name: Ultrasonic Mosquito Watch - Model: M30 - Function: Sonic mosquito repellent - Input: 5V / 0.5A - Output: 34Hz - 70kHz - Battery Capacity: 80mAh - Charging Time: Approximately 30 minutes - Working Time: Up to 150 hours - Colors Available: Black, White, Blue, Pink - Package Dimensions: 32 x 52 x 78mm (single unit) - Total Weight (with packaging): 36.5g Package Includes: 1 x Mosquito Repellent Bracelet 1 x Charging Cable 1 x User Manual