Bluetooth V4.0 Wireless Earbuds Sport Earphones [Magnetic Attraction] Noise Cancelling Headphones incl. Microphone Imported Cord length:75mm Mic Sentitivity:-411db Impedance:163dB Bluetooth V4.0 Input power:10mW Neck adsorption,strong drive,flate line and anti-winding. Innovative magnet featured on the earphone. Featuring shoot button for camera function with connected phone. Reciption Recieving Rage: 33 inches, Power: Standby: 160 hours, calling: 5 - 8 hours, Music: 4 - 6 hours, Charging: 2 hours.