Powerful Noise Cancelling Technology: KVIDIO Active noise cancelling headphones block out up to 95% of ambient noise. It could be a lifesaver from TV, podcasts, and traffic noise while studying or working from home, so you concentrate on whats important to you 70 Hours Playtime with Quick Charging: Up to 40 hours of non-stop playtime in wireless active noise cancellation mode,or extend to an enormous 70 hours in standard music mode. This Bluetooth headphone supports fast charge, a quick 5 minutes charge offers 4 hours playtime when youre in a hurry. No worries about dead battery during long trips. Or just plug in the included audio cable for even longer use in wired mode Advanced DSP and Hi-Fi stero sound: Adopted digital signal process technology, KVIDIO wirelesss headphones deliver a clearer voice quality for your phone conference or conversations. Make working from home more tolerable and talking with loved ones more adorable Transparency Mode and Ultimate Comfor