ISELECTOR BNC80 Wireless Bluetooth Over Ear Headphones with Active Noise Cancelling for Travel Active Noise Cancelling - BNC80 wireless bluetooth headphones brings you a more peaceful listening experience for travel or workout (Noise Cancellation Rate 85%) Be Free of Tangled Cords - with advanced Bluetooth 4.1 Technology and support for apt-X,BNC80 bluetooth headphones stream music directly from your smartphone, PC,tablet even smart TV(bluetooth enabled) Comfortable Fit - soft protein leather ear pad, stretchable headband and rotatable earcups for all day comfortable wearing;closed back headphones with nice sealed ear cup for no sound leakage,no longer worry about disturb others sitting beside you Convenience& Flexibility - BNC80s active noise cancellation can be switched off, enabling you to address someone speaking to you, hear announcements on a plane trip, etc(two-button design:one for bluetooth on/off, the other for ANC on/off) Built-in Rechargeable Battery - BNC80 give you up to half day even longer uninterrupted playtime;you can also use BNC80 as wired headphones to enjoy music without noise reduction when battery runs out(battery life: bluetooth + noise cancelling - 12 hours,bluetooth only-15 hours, noise cancelling only-30 hours)