Description: Model: T7-4 Technologies: BT5.1, A2DP, AVRCP (receiver mode only) Operation Range: Up to 10m (without any blocking objects) Dimensions: 45mm*20mm*11mm Specifications: 1.This extremely portable, lightweight wireless audio transmitter; receiver is an ideal wireless audio solution for a wide range of situations and uses. 2.Transmitter mode:wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers 3.Receiver mode: wirelessly streams audio from your Bluetooth-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones 4.Switch between transmitter and receiver modes with the simple flick of a switch. Effortlessly connect using advanced Bluetooth technology and 3.5mm audio cable (included). 5.Broad Compatibility: With the included 3.5mm cable this Receiver Transmitter adapter can widely be used on your car,computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, etc. 6.Operation Range: Up to 10m (without any blocking objects) Package Included: 1x Bluetooth 5.1 Audio Transmitter/Receiver Adapter 1x 3.5mm Aux Cable