• Safe and healthy design: Smart chip with low consumption, all-day operation, energy saving, and no radiation. Pure physical mosquito repellent, no chemicals, simulating specific sound frequencies to effectively repel 70%-80% of mosquitoes. Suitable for the elderly, children, pregnant women, and pets. • Water-resistant and durable: Fine structure that allows water resistance in daily life, such as washing hands or in the rain. Fast charging in 30 minutes and continuous operation for 130 hours. Standby time of up to 150 days. • Watch display: In addition to repelling mosquitoes, the bracelet includes a digital display to check the time. • Easy to use: Four operation modes. Press the mosquito repellent button to turn on and switch between modes, suitable even for sleeping. • Wide application: Ideal for indoor and outdoor use, such as at the beach, park, camping, mountaineering, and fishing. Effectively blocks mosquito bites.