Willful Wireless Bluetooth Transmitter and Receiver 2 in 1 Stereo Audio Bluetooth Adapter With 3.5mm Stereo Output Connect Speakers,Headphone,TV,Computer,tablet PC,iPod,MP3,MP4,Car,Media Players and more Transmitter: adds wireless capability to your TV, computer, mp3 player, DVD player etc by connecting with this bluetooth adapter via the 3.5mm to 3.5mm audio cable Receiver: turn wired speaker, headphones, stereo system into wireless by connecting with this bluetooth adapter via the 3.5mm to 3.5mm audio cable Bluetooth 3.0 with A2DP for high quality audio sound, can use while charging Built in battery for portable use, or connect to a USB power source for always-on application. Portable mini size(2 x 1 x 0.3 inch), excellent range of up to 10m for both transmitter and receiver