Description: Product model: Q2 Function: ultrasonic mosquito repellent, electronic watch Input: 5V / 1A Output: 34hz-70khz Charging time: about 30 minutes Duration: 150 hours Product color: black, white, blue, pink Single package size: 35x56x92mm Weight: 40g Specifications: description: Principle of mosquito repellent: The bracelet achieves the mosquito repellent effect by imitating the sound of female mosquitoes, such as the sound of male mosquitoes and dragonflies. In nature, blood-sucking female mosquitoes are in the stage of conception and egg laying. At this price, female mosquitoes will avoid male mosquitoes to avoid second conception. Make the sound of male mosquitoes achieve mosquito repellent effect. Product features: pure physical mosquito repellent, non-chemical mosquito repellent, safer, safer, more environmentally friendly and healthier. It can be worn by the elderly, children, pregnant women and pets. The product can be worn indoors and outdoors (sea, park, camping, hiking, fishing) Package Included: 1*mosquito repellent bracelet, 1*charging cable, 1*instruction