Features:
This extremely portable, lightweight audio transmitter & receiver is an ideal audio solution for a wide range of situations and uses.
Transmitter mode, audio from your non-BT TV, home stereo system, or CD player to your BT headphones or speakers.
Receiver mode, audio from your BT-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones.
Switch between transmitter and receiver modes with the simple flick of a switch. Effortlessly connect using advanced BT technology and 3.5mm audio cable.
Broad Compatibility, with the included 3.5mm cable and 3.5mm to cable, this Receiver Transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, etc.

Specifications:
Material: ABS
Size: Approx. 4.4*4.4*1.2cm/1.73*1.73*0.47inch
Model: KN319
Technologies: BT4.2, A2DP, AVRCP (receiver mode only)
Range: Up to 10m/33ft (without any blocking objects)
Charging Time: 2 hours
Continuous Use Time: 6 hours (Receiver Mode)/5 hours (Transmitter Mode)
Battery Type: Li-Polymer (200mAh)

Package list:
1 x Adapter
1 x Micro USB Charging Cable
1 x Cable
1 x 3.5mm AUX Cable
1 x Instructions