[Two-way transmission]: Support music Bluetooth lossless transmission, faster. It not only supports the connection of Bluetooth headsets, Bluetooth speakers and other devices; it can also be connected to a mobile phone and used as a Bluetooth amp without line restrictions. It is a wireless music center around you. [HIFI lossless sound quality] Adopt professional intelligent digital noise reduction chip and superb circuit optimization technology to reduce noise, ensure high sound sampling rate, and provide high-quality sound. Give you the good sound you want. [Long Play] MP3 player allows you to enjoy up to 10 hours of truly lossless music. Charge for 1 minute, use for 1 hour; charge for 1 hour, use for 10 hours, only need 60-90 minutes to complete the charge. [Portable and lightweight] Only 3.30.90.4 inches and 33.2g weight, slim body and light weight are easy to carry, so you can easily put it in your pocket and backpack, and enjoy music anytime, anywhere. [Lightweight material] The body is small and easy to carry around