Wireless, active noise cancelling over-ear headphones with JBL Pure Bass sound. JBL TUNE 750BTNC wireless headphones feature powerful JBL Pure Bass Sound and active noise-cancelling for punchy bass and an immersive audio experience. The lightweight over-ear design offers maximum comfort and sound quality while ready to travel everywhere you go with its compact foldable competence. 15 hours of battery life which recharge in only 2 hours enables noise-free, wireless playback. Allowing connection with two Bluetooth® devices simultaneously, the multipoint connection makes sure you won’t miss a call on your phone while streaming videos on your tablet. Keep your music playing endlessly with the included detachable audio cable which extends the noise-cancellation capability up to 30 hours. JBL TUNE 750BTNC comes in various colors matching your personal style. Features Active Noise Cancelling JBL Pure Bass Sound Wireless Bluetooth Streaming 15H battery life with BT+NC | 2H recharging time Multi-Point Connection Hands-free calls & Voice control Lightweight and foldable design Technical specifications: Transducer size: 40mm Frequency range: 20Hz–20kHz Sensitivity passive mode: 95dBSPL/1mw Sensitivity active mode: 100dBSPL/1mw Transducer impedance: 32 ohm Max input power (wired): 40mW Transmit sensitivity: -15dBV/PA Bluetooth transmitted power: <5dbm Bluetooth transmitted modulation: GFSK, π/4DQPSK, 8DPSK Bluetooth frequency: 2.402GHz–2.48GHz Bluetooth profiles version: A2DP v1.2, AVRCP v1.5, HFP v1.6, HSP v1.2 Bluetooth version: 4.2 Headset battery type: Polymer Li-ion Battery (610mAh/3.7) Charging time: <2 hours from empty Music playtime with BT on and ANC on: 15 hours Music playtime with BT on and ANC off: 22 hours Music playtime with BT off and ANC on: 30 hours Weight: 220g