1Sound Repellent: Ultrasound repellent wristband can mimicking the annoying sounds for repellent, which can be worn by the elderly, children, pregnant women and pets. 2Multifunction: Ultrasound repellent watchband with time display and body temperature monitoring functions, which bring you much convenient for daily use. 33 Modes: Press the switch once to start the indoor mode. Click again to switch outdoor mode. Press again to turn on silent sleep mode. Press the fourth time to turn off. 4Widely Use: Repellent watchband is great for protecting you from sting and enjoying the summer, suitable for outdoor, camping, fishing, hiking, sports, barbecuing. 5USB Rechargeable: Outdoor repellent watchband adopted USB fast charging design, full charged in 30 minutes, which can standby 30 days and working 4 days.