KOTION EACH B3505 Wireless Bluetooth 4.1 Stereo Gaming Headphone Headset Earphone Support NFC with Mic for iPhone6\/iPhone6 Plus Samsung<br>Features:<br>Wireless Bluetooth headset， compatible with Bluetooth enabled devices， such as for iPhone， iPad， HTC， Lenovo， Samsung， Tablet PC， etc.Built-in NFC chip in the right earcup of headset， support pairing through NFC function.How to Use: NFC cellphones touch the right earcup of the headphone within 10mm， and the Bluetooth headphone can be directly connected. (Before pairing through NFC function， please make sure your cellphone's NFC function is opened and the headphone is on pairing mode.)Enhanced noise reduction， good choice for listening music， watching movie， answering phone calls， etc.High precision 50mm magnetic neodymium driver， bring you vivid sound field， sound clarity， sound shock feeling.Multifunctional keys allow you to power on\/off， answer\/hang up\/reject\/redial call， pause and play， vol+\/-， next\/previous track.Supplied with a 3.5mm cable that you can use to connect the headphone to devices without Bluetooth.Up to 10 hours playing time and standby time 250 hours.Powered by the lithium battery (can be charged via USB).Earmuffs used with skin-friendly leather material， and super soft Over-ear pads that is more comfortable for long time wear.Good quality and fashionable appearance; adjustable length hinges and very comfortable to wear.<br>Specification: <br>          Model       KOTION EACH B3505           Bluetooth version       V4.1+EDR           Operation distance       10m           Speaker diameter       50mm           Microphone unit       4 * 1.5mm           Impedance       32ohm           S.P.L       106dB S.P.L. at 1KHz           Frequency response       20HZ-20，000HZ           Battery       Built-in rechargeable 3.7V\/250mAh lithium-ion battery           Music time       Approx. 10 hours           Talk time       Approx. 11 hours           Standby time       250 hours           Input DC       5V\/130mA           Charging time       Approx. 3 hours           Plug type       3.5mm stereo           Audio cable length       Approx. 120cm \/ 3.94ft           Headphone size       Approx. 19 * 7.5 * 19.5cm \/ 7.5 * 3.0 * 7.7oz           Headphone weight       221g \/ 7.8oz   <br>Package Included: <br>1 x KOTION EACH B3505 Bluetooth Headphone1 x Bluetooth headset1 x USB Charging Cable1 x Audio Cable1 x English User Manual