?Overview:Do you want to hear the vivid and clarity sound when you playing game? Do you want to relax yourself in the music world? 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. The best sound effects， the top appearance design， undoubted quality assurance， selling just for a lower price， as game players you shouldn't miss it!Brand: KOTION EACHModel: B3505Material: PP+ABS+FoamQuantity: 1Shade Of Color: Black+OrangeSpecifications:Bluetooth version: V4.1+EDROperation 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 batteryMusic time: Approx. 10 hoursTalk time: Approx. 11 hoursStandby time: 250 hoursInput DC: 5V/130mACharging time: Approx. 3 hoursPlug type: 3.5mm stereoAudio cable length: Approx. 120cm / 3.94ftHeadphone size: Approx. 19 * 7.5 * 19.5cm / 7.5 * 3.0 * 7.7ozHeadphone weight: 221g / 7.8ozPackage size: 19.5 * 8 * 21.5cm / 7.7 * 3.1 * 8.5inPackage weight: 395g / 13.9ozProduct features: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.Packing list: 1 * Bluetooth headset1 * USB charging cable(60cm)1 * Audio cable(120cm)1 * English user manual　<img src="//112.74.112.28/down/products/434767/434767_000.jpg">