Description: Safe and non-toxic electronic mosquito repellent band suitable for children and adults, the combination of ultrasonic technology will effectively keep mosquitoes, insects and bugs away from you and your children. Provides protection indoors and outdoors for your convenience. Features: Ultrasonic: The bracelet uses high-frequency and discreet sound waves to create a sound barrier that protects you from mosquito bites. Non-toxic: Say goodbye to messy and oily mosquito repellent creams and sprays, this sonic bracelet keeps mosquitoes away without harmful chemicals and is non-toxic to use in daily life. Adjustable Length: The mosquito repellent bracelet is fully adjustable, each hole fits easily, making it perfect for adults and children. Widely Applicable: The pest repellent bands are perfect for outdoor or indoor activities, such as traveling, gardening, BBQ, hiking, fishing, etc. Multifunction: The 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: Fashion Mode: 3 modes (garden mode, indoor mode, sleep mode) Input: 5V/1A Frequency: 34Hz-70KHz Battery: 1 x 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