Feature 1USB FAST CHARGING: Mosquito repellent watch uses USB fast charging, charging 30 minutes, standby 6 months, fully charged can work continuously for 7 days, effectively avoiding more than 90% of mosquitoes. 2ULTRASONIC METHOD: Mosquito wristband uses ultrasonic and physical methods to repel mosquitoes without chemical additives, no noise, no odor and is completely safe for seniors, pregnant women, children and pets. 33 GEARS SWITCHING: Ultrasonic mosquito repellent watch preserves you and your loved ones from mosquitoes and enjoy a perfect summer. Three gears switching, sui.wang-edit-text .wang-edit-text .wang-edit-text Package List1 x UltrasonicMosquitoRepellentBracelet1 x Charging Cable1 x Instruction Manual