Enjoy wireless freedom and great sound quality with the Huawei FreeBuds 3. Simply pair FreeBuds 3 with your smartphone using Bluetooth for a true stereo experience when listening to music and podcasts, and making phonecalls. With smart switching technology , these Huawei earbuds provide an optimum listening experience depending on the usage scenario and battery level. Each earbud has two MEMS silicon microphones featuring call noise reduction technology to cancel out background noise and wind noise, enabling you to stay free from distractions. A single charge gives you around 4 hours of continuous music playback, or around 2.5 hours of voice calls. When used with their special charging case , this extends to 20 hours of music playback and 12 hours of calls ! Whenever they're stored in their charging case, the earbuds will charge automatically. The included charging case supports both wired and wireless charging. Depth: 57 MM Height: 18 MM Width: 57 MM Battery Life (in hrs): 4 Blue Tooth: Y Dongle Required: N Noise Cancellation: Y Wifi Enabled: Y Open fit design Rechargeable battery-powered case Active noise cancellation Bone sensor mic audio enhancement Kirin A1 Redefine Bluetooth Connection 14mm large dynamic driver 4hr playback in 1 charge, 20hr playback with charging case Tap-control 2.5 hr Talk time