Features： 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.Super-Portable Audio-Streaming Power The KN326 is just 44mm (1.73”) across and weighs only 18g (0.63oz), but has got powerful wireless audio streaming capabilities. Slip this transmitter & receiver into your backpack or laptop bag and take it on-the-go without the slightest effort. 6.Broad Compatibility: With the included 3.5mm cable and 3.5mm to 2RCA cable, this Receiver Transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, etc. Specifications: Technologies: BT5.0, A2DP, AVRCP (receiver mode only) Operation Range: Up to 10m / 33ft (without any blocking objects) Pairing name:KN326 Charging Time: 2 hours Battery Type: Li-Polymer (200mAh) Dimensions: 44 × 44 × 12mm Weight: 18g Package Content 1x Bluetooth 5.0 Audio Transmitter/Receiver Adapter 1x Micro USB Power Cable 1x RCA Cable 1x 3.5mm Aux Cable 1x User Manua Note: 1. Please allow 1-3cm error due to manual measurement. 2. The colors may be different for the different display,please understand.