Waterproof and Sweatproof Use strict anti-sweat dispensing technology. Bone conduction Bluetooth headset makes long time outside sports possible-cycling, hiking, running and workout, do not worry about sweat any more Open Ear Design Bone conducting headphones adopt Open-ear technology, which transfers sound through cheekbone to keep you more attention onsurroundings Bluetooth 5.3 Chip The Bluetooth 5.3 chip has lower power consumption, faster connection speed, and more stability, supports AAC, SBC high-definition audio decoding, and can connect 2 mobile devices at the same time, making your use worry-0 More Care , More Safe Putting on Bluetooth bone conducting earphone will not let you ignore to care about the environment surrounding cute children, lovely baby, your pets or other family members when working, listening music, doing yoga. Long Time Working Bone conduction headset was built-in 180mAh lithium battery. Working last 7 hours after full charging (80% volume) Lightweight and Skin-Friendly The product is only 29 grams, very light, can be bent arbitrarily, and uses silicone, which is very comfortable to wear Easy to Operate The product has 3 buttons, corresponding to various functional operations, the operation is very simple and convenient