E65BTNC headphones combine eye catching design and premium materials to deliver the world-renowned JBL Signature Sound with wireless convenience and superior active noise cancelling capabilities. With a soft, comfortable fabric headband and angled, form fitting, ear cushions for longer, more enjoyable and immersive listening sessions, the JBL E65BTNC headphones provide active noise-cancelling for both wired and wireless mode. They also provide 24 hours of battery life in Bluetooth mode (15 hours in Bluetooth and noise cancelling mode) and can be completely recharged in just two hours. Multi-tasking is made easy as the JBL E65BTNC headphones will seamlessly switch between two devices ensuring that you never miss a call while enjoying your favourite playlist or watching a movie. In addition, you will also enjoy a detachable, tangle free fabric cord with one button remote, 3 different colour options and a flat folding design for easy transportation. General Specifications: Plug: 3.5mm (1/8") stereo mini-jack Dynamic driver :40 mm Frequency response :20-20kHz Sensitivity :95dB Maximum SPL :8dB Microphone sensitivity @1kHz dB v/pa: -42 Impedance :32 ohm Weight (g) :258g Control and Connection Specifications: Bluetooth transmitted power :0-4dbm Bluetooth transmitted modulation :GFSK, π/4DQPSK, 8DPSK Bluetooth frequency :2.402GHz–2.48GHz Bluetooth profiles :HFP v1.6, HSP v1.2, A2DP v1.2, AVRCP v1.4 Bluetooth version :V4.1 Battery: Battery type :Polymer Li-ion Battery (3.7V, 610mAh) Charging time :2 hours Music play time with BT on and ANC on :Up to 15 hours Music play time with BT off and ANC on :Up to 30 hours Music play time with BT on and ANC off :Up to 24 hours Talk time with BT on :Up to 24 hours