What's in the box:

4 in 1 USB BT Wireless Adapter Transmitter Receiver Music Audio for PC TV Car Hands-free 3.5mm AUX Adaptor (Standard)

Features:
This portable, lightweight wireless audio transmitter and receiver is the ideal wireless audio solution for all situations and applications.
Transmitter mode: from a non BT TV, home stereo or CD player.
Wireless audio streaming to BT headset or speaker 3. Receiver mode: wireless audio streaming to wired stereo, speaker or headset from BT enabled mobile phone, tablet or computer.
Simply press the switch once to switch between transmitter and receiver modes. Easy connection with Advanced BT technology and 3.5 mm audio cable (included).
Wide compatibility: with the attached 3.5mm cable, this receiver transmitter adapter can be widely used in your car, computer, laptop, home stereo system, headset, smartphone, MP3 player, CD player, etc.

Specifications:
Model:T7
Material:Plastic
Color:Black
Package size:4.5*2*1.1cm
Package weight:Approx.20g

Packing list:
1XBT Wireless Adapter