Description : A perfect wireless audio solution for a wide range of situations and uses Transmitter wirelessly streams audio from your non - Bluetooth TV , home stereo system , or CD player to your headphones or speakers Receiver wirelessly streams audio from your Bluetooth - enabled phone , tablet , or computer to your stereo , speakers , or headphones Receive and transmit only need one button One - click Switching . 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 . NOTE : the product in the picture maybe larger than actual one , please check the size before . Specification : Dimensions : 32x17x8 . 5mm / 1 . 25x0 . 66x0 . 33inch Receiver : Blue LED light is on Operation Range : Up to 10m / 33ft ( without any blocking objects ) Technologies : BT5 . 0 , A2DP , AVRCP ( receiver only ) Transmitter : Red LED light is on Package Includes : 1 Piece 5 . 0 Audio Transmitter / Receiver Adapter 1 Piece 3 . 5mm Aux Cable 1 Piece User Manual Note : Color might be slightly different due to the color calibration of each individual monitor . Please allow slightly measuring deviation due to manual measurement .