Bt Version: V5.3 + EDR

Driver size:40 mm

Frequency Range:20Hz-20KHz

Wireless Range:Up to 15M

Playing time:up to 50 hours

Charging Time:2 hours

Noise canceling depth: 22±3 dB

Enjoy music and phone calls without interruption from outside sounds Lightweight, Comfortable Fit: Large, soft ear-pads rest 

around the entire ear, with soft density foam that ensures proper noise cancellation.