Feature 11. 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.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 ListMosquito Repellent Bracelet*1NoteDue 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.