Fangrui Product Details Abundant Audio Inputs: With 3.5 Mm Aux/usb 5.0 Inputs, Almost Compatible With All Home Audio Devices Such As Phone, Tablet, Computer, Tv, Set-box, Cd Player Etc. Usb Port Supports Computers (no Driver Required) And Smart Phones (with Otg Function). Bluetooth 5.0 Classic Tpa3116 Chip: Supporting Bluetooth 5.0 To Realize Stable High-speed Transmission Speed And Greater Wireless Range. Adopting Tpa3116 Chip Whose Max Output Power Reaches 50w X 2, Easy To Drive Most Home Desktop / Bookshelf / Indoor Passive Speakers (4-16ohm). Hifi Sound And No Noise: Adopting Simple Circuit Layout And High-quality Components Such As Pure Copper Gold-plated Terminals, The Sound Is Very Clear And Clean, Natural And Uncoloured, No Or Audible Noise Even At High Output. Dc 9-24v Wide Voltage Input Makes It Possible To Be Used In Car Or Motorcycle. Superior Design And Colourful Indicator: Super Compact But Attractive Appearance, Treatment Process Of Case Looks High-end And With Texture. With Power, Input And Volume Indicators,