Overview: 1.No ear damage, hearing aid engine. 2.Titanium alloy memory metal ear hook, does not affect wearing glasses. 3.TYPE-C charging port, ecological shock film, 230mAh, 10m connection. 4.Bone conduction black technology, Bluetooth 5.0 version, type-c charging port, ecological diaphragm, lightweight, waterproof, 360° arbitrary bending Specification: Bluetooth protocol: 5.0 Channel: stereo Usage: ear hanging type Single or binaural: bilateral stereo Transmission range: 10 meters Function: battery display, call function, support music Custom processing Applicable gift-giving occasions: festivals, trade fairs, advertising promotions, employee benefits, anniversary celebrations, business gifts, opening ceremonies, awards commemorative Package Content: 1 x Headphone