Jupi-storm Mini Portable Bluetooth Transmitter/Receiver, 2-in-1 Wireless Bluetooth Audio Receiver & Adapter with 3.5mm Jack Cable for TV,Headphone,Home/Car Audio Stereo System,etc BLUETOOTH TRANSMITTER AND RECEIVER: Transmitter function transforms 3.5mm audio-out media devices into a Bluetooth device capable of streaming Bluetooth audio; Receiver lets non-Bluetooth devices like car or home stereos receive high quality music. One product ,Simple one-button switch to shift between TX(Transmitter)and RX(Receiver) mode for your optional use. Bluetooth-everywhere for all 3.5mm media devices, In Transmitter mode (TX), turn a non-Bluetooth TV, PC, CD player, iPod, MP3 / MP4 into a Bluetooth transmitter while pairing with Bluetooth stereo. Receiver mode (RX): Ideal for home or vehicle music streaming sound system. Built in battery for portable use, up to 8 hours use - enjoy your favorite wireless content all the time. fast-charging it through the USB cable, but, it can not be used while charging. Pure sound,listen to CD-like audio quality at no compromise.portable and compact design, ultra-light weight, easy to take along and used in multiple devices and occasions.