Repel annoying mosquitos with this discreet and stylish Ultrasonic Mosquito Repellent Bracelet. Uses Ultrasonic waves to deter any oncoming mosquitoes to protect you from those itchy bites! Removable strap so it can be used as a hanging pendant. Main Features: -A new generation of ultrasonic mosquito repellent bracelet, the addition of LED time display function.-The anti-mosquito bracelet is made of safe materials, environmentally friendly, non-toxic and safe to use. The strap is designed with holes and is highly flexible for all ages.-Mosquito Repellent Bracelet is colorless, odorless, chemically free, mimicking the wings of male mosquitoes, resisting female mosquitoes, and scientifically designed to promote your life.-The anti-mosquito bracelet is very lightweight and durable, so you can carry your bracelet with you, so that you can say goodbye to those nasty mosquitoes and provide you with long-term protection.-USB charging, durable to use.-Anti-mosquito bracelets have a wide range of applications for outdoor and indoor, sit-in fishing, parks, summer camps, hiking, and to prevent those annoying mosquitoes. -This is the best gift for family and friends. Specification: New function: LED time display Product Name: Ultrasonic mosquito repellent bracelet Function: Ultrasonic mosquito repellent Applicable age: 3 years old or older Waterproof: waterproof Input: 5V/1A Output: 34HZ-70KHZ Battery capacity: 90mAH Charging time: about 30 minutes Weigt:65g Size: Diameter: 31 mm,Total Length: 296 mm Life time: 130 hours Colors:black,white