Description: With Mini size portable design, let you carry them to anywhere you want. Wirelessly streams audio from your Bluetooth-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones. Plug and play without external power supply. With the included 3.5mm cable, this Receiver Transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, etc. Easy control, You can answer phone calls or control music by the receiver. Specification: Size: Approx. 32x17x8.5mm/1.26x0.67x0.33inch Material: ABS Plastic Technologies: BT5.0, A2DP, AVRCP (receiver mode only) Operation Range: Up to 10m / 33ft (without any blocking objects) Transmitter mode: Red LED light is on Receiver mode: Blue LED light is on Package Includes: 1 Piece Bluetooth 5.0 Audio Transmitter/Receiver Adapter 1 Piece 3.5mm Aux Cable 1 Piece User Manual Note: Please allow 0.5-1inch measuring deviation due to manual measurement(1cm=0.39inch Due to the different monitor and light, the actual colors of the item might be slightly different from the color showed on the pictures. Your satisfaction is our utmost concern. Thank you!