Features:Portable and lightweight wireless audio transmitter and receiver, for ideal wireless audio bluetooth-compatible solution for every situation and use.Transmitter Mode: Wirelessly stream audio from a non bluetooth-compatible TV, home stereo or CD player to bluetooth-compatible headphones or speakers.Receiver Mode: wirelessly stream audio from a bluetooth-compatible phone, tablet, or computer to a wired stereo, speakers, or headphones.for most products of bluetooth-compatible protocol in the market, low output delay and stable performance.Widely used in computer/laptop/tablet/home stereo system/headphone/smartphone/MP3 player and CD player, etc. Specifications:Material: ABSColor: BlackSize: Approx. 32x17x10mm/1.25x0.66x0.39 inchModel: BT600Technology: BT5.0, AVRCP (receiver mode only), A2DPPairing Name (Receive Mode): BT600Operating Range: Up to 10m/33ft (barrier free)Transmitter Mode: red LED light onReceiver Mode: blue LED light on Note:Other demo accessories are not included.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Audio Transmitter/Receiver Adapter1x Dual 3.5mm Audio Cable1x User Manual