Wireless Bluetooth V4.0 in-ear headphones featuring CVS 6.0 noise cancelling, multi-connection function for connecting two devices at the same time, voice control and a microphone. The headphones are able to transfer high-fidelity stereo music and clear speech within 10 meters. The frequency response is 20Hz – 20kHz with the impedance of 16 ohms and the sensitivity 110dB. The cable length is 0,6m and after the 1 hour charging time the headphones are able to operate for 200 hours in a standby mode, 4 hours of music time and 6 hours talk time. The package contains the headphones, USB chargin cable, cable clamp, 2 pairs of earbuds and a pair of ear hook. Colour: black.