KOTION EACH B3505 Wireless Bluetooth 4.1 Stereo Gaming Headphone Headset Support NFC With Microphone<br>This KOTION EACH B3505 wireless Bluetooth Stereo headphone with remarkable sound，it is a good choice for listening music， watching movie， chatting online， etc.It is also built-in NFC chip in the right earcup of headset， support pairing through NFC function.<br>Features:Wireless Bluetooth headset， compatible with Bluetooth enabled devices，such as for iPhone，for iPad，for HTC， for Lenovo， for Samsung， for Tablet PC， etc.Built-in NFC chip in the right earcup of headset， support pairing through NFC function.<br>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 sureyour 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 8 hours playing time and standby time 180 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>Specifications:Bluetooth version: Bluetooth V4.1Operation distance: 10mSpeaker diameter: 50mmMicrophone unit: 4 * 1.5mmImpedance: 32ohmS.P.L: 106dB S.P.L. at 1KHzFrequency response: 20HZ-20，000HZBattery: Built-in rechargeable 3.7V\/250mAh lithium-ion batteryCharging time: Approx. 3 hoursWorking time: Approx. 8 hoursStandby time: 180 hoursPlug type: 3.5mm stereoColor: Black&amp;amp;orange， White&amp;amp;Blue<br>Package include:1 x EACH B3505 Headphone