Experience magnificent sound quality and submerge in serenity with Concord. Boasting a 27-hour playback time and 40mm dynamically tuned drivers, Concord is the ultimate over-ear headset. Enjoy the convenience of crystal-clear hands-free calling with the integrated microphone and built-in button controls. The AUX support ensures your beats don’t stop and the soft earpads ensure maximum comfort so you can groove to the beat all day long. Technical Specifications: Bluetooth Version: V5.3 • Bluetooth Profiles: HSP/HFP/A2DP/AVRCP Bluetooth Frequency: 2.4 - 2.48GHz Driver Diameter: Ф 40mm,Input Rating: 5V/0.5A Impedance: 32Ω ,Frequency: 20Hz-20KHz , Sensitivity: 105dB±3dB, Reduction Noise frequency: -26db Charging Time: 1.5hrs, Playing Time: ANC Off: 27hrs / ANC On: 18hrs, Standby Time: ANC Off: 500hrs / ANC On: 48hrs Battery Capacity: 500mAh,Battery Type: Li-Polymer Input Port type: USB-C Features: 40mm Dynamic Drivers: Experience acoustic bliss with wirelessly streamed audio that lets you feel every beat of your music when you hear it Active Noise Cancellation: Equipped with a highly effective ANC system that blocks out background noise Concord does a great job in reducing environmental noise Clear Calls: Enjoy the convenience of crystal-clear hands-free calling with the integrated microphone on the Concord Compact & Portable: The lightweight design and the foldable headband lets you carry these headphones with ease and use on the move Ergonomic Design: Concord is ergonomically designed to fit the unique contour of your ears and soft pads for extended comfort Long Battery Life: Built-in rechargeable lithium polymer battery that supports up to 27 hours of play-time AUX Support: You will not have to worry about stopping the entertainment if you run out of power, plug in the AUX cable for unlimited wired listening Convenient Button Control: Effortlessly manage audio playback and volume with the multi-function touch buttons on Concord