Description: Intelligent ultrasonic mosquito repellent bracelet Pure physical mosquito repellent, green Fast charging, standby for a long period of battery life Simulate specific sound frequencies and remove mosquitoes Efficiently drive 70% to 80% of mosquitoes Whole family can use. Does not contain any toxic chemicals. Long-term mosquito repellent Bracelet. Item Category: Mosquito Repellent Bracelet Input: 5V/1A Output: 34Hz-70KHz Charging time: about 30 minutes Life time: 130h Color: black, white Band Material :silicone Size:285*27mm Specifications: Pure physical mosquito repellent, free of chemical drugs, safer and more environmentally friendly. Old people, children, pregnant women and pets can be worn, easy to carry, indoors and outdoors (seaside, park, camping, hiking, fishing, etc.) Package Included: 1* repellent bracelet 1* charging cable Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement.