Function Introduction: 1. This portable and lightweight wireless audio transmitter and receiver is the perfect wireless audio Bluetooth transmission solution for a variety of situations and uses. 2. Transmitter mode: wirelessly transmit audio from a non-Bluetooth enabled TV, home stereo system or CD player to Bluetooth headphones or speakers. 3. Receiver Mode: Wirelessly transmits audio from Bluetooth-enabled cell phones, tablets, or computers to a wired stereo, speakers, or headphones. 4. This product is compatible with most Bluetooth protocol products on the market, with low output delay and stable performance. Widely used in computers/laptops/tablets/home stereo systems/headphones/smartphones/MP3 players and CD players<br><br>size: 3.2 x 1.7 x 1CM Material: plastic colour: black<br><br>Package Contents: 1 x bluetooth transmitter 1 x Audio cable