What's in the box:

BT-17 USB Audio Transmitter Receiver BT5.0 Wireless Music Adapter LCD Display 3.5mm AUX Audio Adapter for TV Speaker Headphones Car Stereo (Standard)

Features:
Fast Connection & Stable Signal:
BT5.0 provides more stable and faster audio signal transmission. Audio receiver and transmitter mode 2-in-1, convenient to use.
Receiver Mode:
Changes the non-BT headphone, car stereo, or home audio into BT-enabled ones. After paired, play music from your BT-enabled audio devices.
Transmitter Mode:
Connect to non-BT MP3, MP4, TV, and PC, etc., changing them into BT-enabled ones, and making it work with BT-enabled headset and speaker.
Strong Compatibility:
Compatible with Android & iOS smartphones and Tablet PC, almost all BT-enabled audio devices, and stereo system with 3.5mm port.
USB Plug and Play:
USB powered, easy installation, no driver needed, plug and play.Comes with an LCD display screen which shows the working status.

Specifications:
BT Version: 5.0
Transmission Distance: 10m (open space)
Input Voltage: DC 5V
Interface: 3.5mm+USB
Color: Black
Item Size: 6.7*2.6*1.3cm/2.63*1.02*0.51in
Item Weight: 12g/0.42oz
Package Size: 10.0*6.6*1.8cm/3.93*2.59*0.70in
Package Weight: 34g/1.19oz

Package List:
1 * Audio Adapter
1 * Audio Cable
1 * User Manual (English/Chinese)