[Up to 52 hours of playback time] With up to 52 hours of listening time in Bluetooth mode, you'll always have music to inspire you. Whether you want to take advantage of the convenience of wireless headphones or the long-lasting functionality of a wired connection (3.5mm audio cable included).[3-EQ Mode Optimises Sound Quality] Always stay up-to-date for better sound and a better listening experience. Bluetooth for Headphones features 3 EQ modes that allow you to switch freely between Balanced, Bass Boost and High Resolution sound. Each mode gives you CD-quality sound.[Comfort and Custom Design] The headphones are designed for long-term comfort. The soft over-ear pillows feature advanced ventilation and a unique ergonomic fit for any head shape. Make sure they fit snugly in your ears for a better sound experience and to immerse yourself in the full sound. Warm tips: please remove the headphones every 2-3 hours.Bluetooth 5.3 and Built-in Microphone Equipped with two 40mm large aperture drivers and Bluetooth 5.3 technology, these Bluetooth headphones offer more stable transmission speed, lower latency and better audio output. Providing you with great music enjoyment, the wireless headset has a built-in microphone for hands-free clear phone connectionExcellent ComfortSoftly padded memory protein ear cups fit comfortably in your ears for all-day listening. It is very lightweight and stress-free to carry around when travelling.Packing List: 1*Earphone