M2 Bone Conduction Headphones Sports Wireless Earphones With Built-in Mic For Running Cycling Hiking Driving black Bus Models • Auxiliary negative input (hood

• Auxiliary negative input (hood or trunk)

Electric safety switch kit-made of light CNC machined and anodized T-6061 aircraft aluminum alloy

door wrist

Charging cable: 8

let us in the high-speed line can be as clear as ordinary speech

M2 Bone Conduction Headphones Sports Wireless Earphones With Built-in Mic For Running Cycling Hiking Driving black Bus Models • Auxiliary negative input (hoodDescription: Name: Bone Conduction Headphones Battery: 380MAH; Usage time: about 10 hours; Bluetooth compatible version: version 5. 3; Bluetooth compatible chip: Jerry chip; Frequency: 20Hz 20KHz; Impedance: 32 euros; Sensitivity 85dB mW; Waterproof rating IPX 5; Speaker type: bone conducted shaker speaker; Bluetooth compatible distance: about 10 meters; Charging time: about 2. 5 hours; Bluetooth compatible protocol: A20P AVRCP HSP HFP; Packing box