Neck Wearing Bluetooth Headset V5.0 Wireless Neck Hanging Exercise $ 21.78 Product information: Item No.: RB-S6 Transmission range: 10 meters Function: call function, support music Custom processing: Yes Print LOGO: Yes Bluetooth protocol: 5.0 Channel: Stereo Usage: neck hanging Whether single or double ears: bilateral stereo Color: black, white Packing list: Headphone x1