What's in the box:

C28 Bluetooth Transmitter & Receiver Hands-free Car Kit Wireless Audio Adapter with Microphone for Headphone Speaker Car Stereo MP3 TV PC (Standard)

Overview:
C28 is a 2 in 1 BT Transmitter & Receiver. As a BT Audio Transmitter, it can be connected to the audio devices without BT function, changing them into BT-enabled ones, and making it work with BT-enabled headset and speaker. As a BT Audio Receiver, it can change the traditional car stereo systems and home audio system into BT-enabled ones, and easy to pair with BT-enabled smartphones, laptops, tablets, etc. C28 will give you much fun and convenience.

Features:
[Multi-functional Adapter]
Receiver and transmitter 2-in-1, one-button switch, upgrade non-BT audio devices to BT-enabled ones. With built-in microphone, it enables hands-free calls to ensure driving safety.
[Receiver Mode]
Change the traditional Car Stereo system or Home Audio System into BT-enabled ones, pair with your BT-enabled smartphone, laptop, tablet PC to enjoy wireless music.
[Transmitter Mode]
Can be connected to the audio devices (such as MP3, TV, and PC, etc.) without BT function, changing them into BT-enabled ones, and to work with BT-enabled headset or speaker.
[BT5.0 Technology]
Wireless 5.0 technology ensures transmitting strong signals in high-quality and high speed. BT range reaches up to 10 meters in open space.
[Low Power Consumption]
Built-in 140mAh battery ensures up to 4 hours working time, you can enjoy wireless free all day long. Easy connection, plug and play.

Specifications:
Model Number: C28
BT Version: 5.0
Transmission Distance: 10m / 33ft (space place)
Battery: Built-in rechargeable Li-ion battery (140mAh)
Working Time: about 4 hours (depends on audio volume)
Charging: Micro USB 5V
Color: Black
Main Item Size: approx. 59.5*22*12mm/2.34*0.86*0.47in
Main Item Weight: 10.5g/0.37oz
Package Size: 102*67*18mm/4.01*2.63*0.70in
Package Weight: 39g/1.37oz

Package List:
1 * BT Transmitter & Receiver
1 * 3.5mm Audio Adapter
1 * USB Charging Cable
1 * User Manual (English/Chinese)