【High Sound Quality】 Equipped with Bluetooth 5.0, providing stable connectivity and high-quality music playback. 【Long Playback Time】 Offers up to 10 hours of continuous playback, perfect for extended use. 【Compact Design】 Comes with a compact case for easy portability, allowing you to use it anytime, anywhere. - Product Name: True Wireless Earphones - Bluetooth Version: 5.0 - Maximum Continuous Playback Time: 10 hours - Model Number: TWS001-Black I purchased these but have no use for them, so I'm putting them up for sale. Brand new, unopened. Thank you for looking.