Description: Safe and non-toxic electronic mosquito repellent band suitable for children and adults, the combination of the ultrasonic technology will keep the mosquito, bug, and insect away from you and your kids effectively. Provides protection indoor and outdoor for your convenience. Features: [Non-Toxic]Say goodbye to messy, oily mosquito creams and sprays, this sonic wristband keeps mosquitoes away without harmful chemicals, and non-toxic to use in daily life. [Ultrasonic]Wristband uses high frequency, unobtrusive soundwaves to create a sonic barrier that protects you from mosquito bites. [Adjustable Length]Mosquito repellent bracelet is fully adjustable, each hole easily fits, making it perfect for adults and kids. [Great Gift]The wristband is the perfect gift for outdoor adventurers, it protects loved ones from mosquitoes. [Widely Applicable]Pest control bands are perfect for outdoor activities or indoor use, like traveling, gardening, BBQ, hiking, fishing, etc. Specifications: Color: Black;White (Optional) Material: Silicone, ABS Style: Fashion Mode: 3 Modes Input: 5V/1A Frequency: 34Hz-70KHz Battery: 1*3.7V, 90mA lithium battery(Included) Charging time: 30min Working time: 130h Standby Time: 30 Days Application: Mosquito Occasion: Home, Office, Outdoor, Travel Package Size: 10*6*4.5cm / 3.93*2.36*1.77inch Package Weight: 54g / 0.11lb Package List: 1 * Mosquito Repellent Bracelet 1 * USB Charging Cable