JBL Tune 770NC Wireless Over-Ear Headset, ANC, Bluetooth, 1Y - White Features: Foldable; Earpiece Swivel; Active Noise Cancellation Frequency Response: 20Hz to 20kHz (Wireless), 20Hz to 40kHz (Wired) Controls: Built-In Controls on Right Earpiece ANC: Noise Cancelling Microphone Microphone: 2 Voice Mics with Beamforming Sensitivity: 100 dB SPL at 1 kHz Wireless Bluetooth: 5.3 / NFC Maximum Paired Devices: 2 Recharge Time: 3 Hours Battery Chemistry: Lithium-Ion; Capacity: 850mAh Weight: 256g Warranty: 1 Year Official Warranty