ALTEAM Active Noise Cancelling Headphones Wireless Over Ear Headphone with Built-in Mic for Phone Call, Volume Control, Deep Bass, Lightweight 20H Playtime for Work/Travel/Home-Black

ALTEAM SpecificationsDriver Unit: 40 mmFrequency Response: 20 Hz ~ 20 KHzImpedance: 32 OhmSensitivity: 103 dBM.P.O.: 100 mWPower: Li-Ion 3.7V / 700mA BatteryWorking Hours: Approx. 20 HrsWorking Distance: 10 mWeight: 240 g Package Include:Headphone3.5mm Audio CableUSB Charging Cable2 pin inflight-AdapterZip Carry Bag Features: * ACTIVE NOISE CANCELLATION: Active Noise Cancelling function which can effectively reduce 90% of ambient low frequency noises such as jet engine sound and traffic sound, leaves you only pure music. * NON-STOP MUSIC WITH WIRELESS / WIRED CONNECTION: Quick and stable wireless connection to ensure continuous stereo quality sound or with 3.5mm audio cable for non-stop music when the battery is flat. Rechargeable 3.7V / 700mAH Li-Ion Battery is included. * STEREO SOUND WITH BASS BOOSTS: Equipped with large 40mm Neodymium and Bass boosts tuning to give you ultimate auditory enjoyment. * BUILT-IN QUICK ACTION CONTROLS: Built-in quick Volume up/ down, Play/ Pause, Skip forward/ back control ...