About this item [50 Hours Music Enjoyment]: A built-in 500mAh battery ensures your headphones won't power off. Just a single charge allows you to enjoy up to 50 hours of noise reduction. Alternatively, plug in a 3.5mm stereo audio cable to extend your listening time when the battery is low. [Unique Lightweight Ergonomic Design]: Professional-grade protein ear pads rotate inward at 100° and fold inward at 120°, making the earmuff extremely light for long-term comfort. An ergonomic headphone construction with a multi-level adjustable headband allows for a tailored fit. [Delivers Deep Bass Audio]: Dual 40mm HD high-resolution audio drivers and high-response diaphragm deliver unparalleled sound without interruption. Experience high-quality audio that truly resonates with your soul. [Bluetooth 5.3 & Built-in Mic]: Equipped with dual 40mm driving units and Bluetooth 5.3 chip, the audio transmission is more stable with lower delay, offering an exceptional music experience. These lightweight h