Item: Ultrasonic Mosquito Repellent BraceletInput: 5V/1AOutput: 34Hz-70KHzCharging time: about 30 minutesLife time: 130hColor: Black, WhiteWeight: 72gFeatures:-Pure natural mosquito repellent, green, effectively repelling 70% to 80% of mosquitoes.-Simulate specific sound frequencies and remove mosquitoes.-Fast charging, standby can extend battery life, 130 hours of long battery life.-It can be used by the whole family and does not contain any toxic chemicals.-The fine structure design realizes the life waterproofing, and no water will enter the hands or rain (please do n’t soak it in the water).Three-block drive mode setting:1.After the power is turned on: One gear mode, suitable for daily indoor use.2.Press the button again: switch to the second gear outdoor mode.3.Press the button again: switch silent mode.Package Included:1 x Bracelet1 x Charging cable1 x Instruction manual