HiFi Stereo Sound Quality JOMILIN Bluetooth over-ear headphones featured deep bass and high-fidelity sound quality, with balanced sound quality from bass to the mid-to-high range. The sound quality will not be completely degraded. Dual 40mm drives and deep bass technology let you experience music like never before. We are focused on what you need! Fast Charging With up to 60 hours of playtime on a single charge, our Bluetooth headphones support fast charging and take only 2 hours to fully charge. Don't worry about battery problems when traveling. Light Weight and All-day Comfort Made of soft memory-protein earmuff material, breathable earmuffs provide you all-day-long comfortable condition while enjoying the immersive music. Non-stop Music After 60 hours of playtime, you can switch fojep over bluetooth headphones from wireless to wired mode. Foldable Design You can easily fold the headphone into a portable bag and minimalist travel case wherever you go once, support folded multiple times. It occupies lesser space and little weight in your back bag, take your favorite tunes with you. Bluetooth 5.3, 3 second connection The advanced Bluetooth chip creates a fast and stable connection to your Bluetooth devices. With the controls for the auricle, you can freely switch between calls and music. Supports the hands-free function and conveniently answers the incoming call with the built-in microphone.