Brand: neutral function: support for music Bluetooth protocol: 3.0 channel: the use of stereo: head mounted transmission range: 10 meters customized processing: is printed (exquisite gift giving occasions: wedding, employee benefits, public relations planning, opening ceremony, business gifts, anniversary celebrations, fairs, birthday celebration, the Advertising Festival Awards Memorial color: golden, black, red, blue, gray iron function 1: Bluetooth mobile phone call, listen to music function 2: wired and wireless 2 functions: Bass head wearing type stereo Bluetooth