Feature: 1. 1. Smart Mosquito-repellent Bracelet: A new generation of bracelet has the functions of both repelling mosquitoes and displaying the time, repelling mosquitoes in all directions. Lets you not afraid of bites, and enjoy summer style. 2. 2. USB Charging: The mosquito-repellent bracelet is compatible with all USB output devices, so you can use USB charging cable to charge. 3. 3. Long Battery Life: Built-in battery 90mAh, the battery life up to 150 hours. The mosquito-repellent bracelet has long battery life and life waterproof performance. 4. 4. Efficient Repellent: Adopts pure physical mosquito repellent, not chemical drug repellent for safer, more assured, more environmental protective, and healthier. 5. 5. Wide Application: The bracelet can be worn indoors and outdoors (seaside, park, camping, hiking, fishing), and it can be worn by the elderly, children, pregnant women and pets. Specification: Name: Ultrasonic Mosquito Repellent Bracelet (with Time Display) Model: Q2 Power: ultrasonic mosquito repellent, electronic watch Input: 5V/1A Output: 34Hz-70KHz Charging time: about 30 minutes Battery capacity: 90mAh Endurance working time: 150 hours Product color: black, white, blue, pink Packing size: about 35x56x92mm/1.38*2.20*3.62in Package weight: about 40g Principle of Mosquito Repellent: The bracelet achieves the mosquito repellent effect by imitating the sounds that female mosquitoes hate, such as the sounds of male mosquitoes and dragonflies. In nature, the blood-sucking mosquitoes are all female mosquitoes, and they are all in the stage of conception and egg-laying. In this price range, female mosquitoes will avoid male mosquitoes and avoid second conception, so simulating the sound of male mosquitoes can achieve the mosquito repellent effect. Package List: Mosquito Repellent Bracelet*1 Note: Due to the different monitor and light effect,the actual color maybe a slight different from the picture color. Please allow 1-2cm differs due to manual measurement.