Mpow Active Noise Cancelling Headphones, 35H Playtime Wireless Headphones with CVC 8.0 Built-in Microphone Bluetooth 5.0, HD Stereo Sound, Wired/Wireless Headset, for Online Class, Home Office, TV, PC

What is Noise Cancellation?

There are TWO types of noise cancellation: Active & Passive
1. Passive Noise Cancellation does not utilize any power technology to blocknoise . but rather just reduces with materials and structures. 
2. Active Noise Cancellation is where the speakers reduce unwanted backgroundnoise when you are listening to your tunes. It creates an alternative soundwave to offset other noise coming into the headphone.

Why You Need a Pair of Mpow Noise Cancelling BluetoothHeadphones?
The noise cancelling headphones reduces annoying low-frequency noises.
The bluetooth 5.0 headphones can help you to work . study and concentrate. 
The wireless headset works to protect your hearing. 
Mpow bluetooth headphones provides peace of mind

Tips: 
1. For optimum sound quality . noise cancellation . and call experience . makesure the left and right earcups are worn on the correct sides and they create atight seal around your ears. 
2. Please take off the Bluetooth over ear headphones every 1-2 hours to getyour ears relax for better wearing experience. 
3. Playtime varies on settings . environmental conditions . and usage. 
4. ANC works best at reducing consistent low Frequency ambient noise . likeceiling fans . engine sounds . motor noise.

Specifications: 
Bluetooth Version: BT 5.0
Range: 33feet (10m) 
Microphone: cVc 8.0 noise cancelling mic
Playtime: 35 Hours (ANC OFF) 
Charging time: 2.5 hours (fully charged); 10mins charge for 2hrs playback
Foldable: Yes
Rotatable Earcup: Yes
Driver Diameter: 40mm
Impedance: 32Ω
Frequency Response: 20Hz-20 kHz

Package contents and after-salesservice:

Active Noise Cancelling WirelessHeadphones × 1

Instruction Manual × 1

Carrying Case × 1

3.5mm Audio Cable × 1

USB Charging Cable × 1