Swiss Cougar Vienna Noise Cancelling Headphones

Supports playback from smartphones, tablets or most other Bluetooth compatible audio devices. Noise cancelling technology reduces outside noise and interference. 16.3 ( l ) x 7.3 ( w ) x 18.5 ( h ) cm Aluminium, ABS & PU Case: 18.5 ( l ) x 14 ( w ) x 8 ( h ) cm EVA Bluetooth version 5.0 10m visible distance • Built-in microphone supports call pick-up 500mAh with lithium battery • Charge time: 2 hours Playback time: 12 hours for ANC mode ; 16 hours for Bluetooth only mode Cancelling DB: 20db • Noise cancellation frequency range: 50 - 1200Hz Signal Noise Ratio ( SNR ) : > 90dB Sensitivity: 115dB