Description: A perfect wireless audio solution for a wide range of situations and uses Transmitter mode wirelessly streams audio from your non- TV, home stereo system, or CD player to your headphones or speakers Receiver mode wirelessly streams audio from your enabled phone, tablet, or computer to your wired stereo, speakers, or headphones Receive mode and transmit mode 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 mode: Blue LED light is on Operation Range: Up to 10m / 33ft (without any blocking objects) Technologies: BT5.0, A2DP, AVRCP (receiver mode only) Transmitter mode: 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.