General description This USB rechargeable mosquito repellent bracelet is designed for both indoor and outdoor use, suitable for adults and kids. Made from skin-friendly silicone, it is non-toxic, odorless, and free from added chemicals, making it safe for everyone, including babies. The bracelet effectively keeps mosquitoes at bay, protecting your skin from bites without harmful substances. Technical specifications Material: Skin-friendly silicone Charging time: 30 minutes Standby time: 30 days Usable times on full battery: 130 or more Installation Adjustable watch strap suitable for most people. Usage Press the power button once to turn on and enter internal mode. Double press to switch to outdoor sports mode. Press three times to enter the quietest mode, ideal for sleeping. Press four times to turn off the device. Click the time display button to show the time. Other information This bracelet uses biological sound waves (ultrasonic bionic waves) to repel mosquitoes. Imitates