N2B Magnet, K1 and I7 Bluetooth Headsets with Mic are the MOST FAVORITE WIRELESS BLUETOOTH for most of the people. These are smart, lightweight and fit perfectly in your ears due to which they always stay in place while Running, Jogging & Gymming. The nano-coating technology protects ear buds against sweat during work out! It has HD speakers with excellent quality of sound with enhanced and intelligent BASS effect. It has smart features which allow you-hands free calling, voice command, picking up/rejecting calls and controlling music! Battery Charging time: 1 hour, Talking/Playing time: 4 hours, Stand by time: 48 hours, Wireless range 10 meters.