[Two-way Transmission]: Support lossless Bluetooth music transmission, faster. Not only supports connecting Bluetooth headsets, Bluetooth speakers and other devices; it can also be connected to a mobile phone and used as a Bluetooth amplifier without line restrictions. It is a wireless music center around you. $ [Lossless HIFI Sound Quality] Adopt professional intelligent digital noise reduction chip and excellent 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 3.3*0.9*0.4 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