Feature: 1. [Ultrasonic]Wristband uses high frequency, unobtrusive soundwaves to create a sonic barrier that protects you from mosquito bites. 2. [Non-Toxic]Say goodbye to messy, oily mosquito creams and sprays, this sonic wristband keeps mosquitoes away without harmful chemicals, and is non-toxic to use in daily life. 3. [Adjustable Length]Mosquito repellent bracelet is fully adjustable, each hole easily fits, making it perfect for adults and kids. Specification: Description: Safe and non-toxic electronic mosquito repellent band suitable for children and adults, the combination of ultrasonic technology will keep the mosquito, bug, and insect away from you and your kids effectively. Provides conservation indoors and outdoor for your convenience. Features: [Ultrasonic]Wristband uses high frequency, unobtrusive soundwaves to create a sonic barrier that protects you from mosquito bites. [Non-Toxic]Say goodbye to messy, oily mosquito creams and sprays, this sonic wristband keeps mosquitoes away without harmful chemicals, and is non-toxic to use in daily life. [Adjustable Length]Mosquito repellent bracelet is fully adjustable, each hole easily fits, making it perfect for adults and kids. [Widely Applicable]Pest control bands are perfect for outdoor activities or indoor use, like traveling, gardening, BBQ, hiking, fishing, etc. [Multifunction]Electronic mosquito repellent also supports electronic clock, step counting, and temperature measurement functions.(for Type 2) Specifications: Types(Optional): Type 1(Time, Mosquito Repellent); Type 2(Time, Mosquito Repellent, Step Counting, Temperature Measurement) Color: Black; White (Optional) Material: Silicone, ABS Style: Mode: 3 Modes(Garden mode, Indoor mode, Sleep mode) Input: 5V/1A Frequency: 34Hz-70KHz Battery: 1*3.7V, 90mA Lithium Battery(Included) Charging time: 30min Working time: 130h 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 1 * User Guide Package List: 1 * Mosquito Repellent Bracelet 1 * USB Charging Cable 1 * User Guide