What's in the box:

Bluetooth Transmitter Receiver 3.5mm AUX Wireless Audio Adapter Hands-free Car Kit with Microphone for Headphone Speaker Car Stereo MP3 TV PC (Standard)

Overview:
Wireless audio 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. Easy connection, plug and play.

Features:
Receiver Mode: Change the traditional non-BT car stereo system, speaker, headphone into BT-enabled ones and play wireless music from the smartphone, laptop, tablet PC, and other BT-enabled audio devices.
Transmitter Mode: Can be connected to the non-BT audio devices (such as MP3, TV, and PC, etc.) via the included 3.5mm audio jack, changing them into BT-enabled ones, and working with BT headset or speaker.
Multi-point Connection: In transmit mode, it can pair with two BT-enabled headphones or speakers to play music simultaneously. Share a pleasant time with your friend or family.
BT 5.0 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 280mAh battery ensures up to 7 hours of working time. With a built-in microphone, it enables hands-free calls to ensure driving safety.

Specifications:
BT Version: 5.0
Transmission Distance: 10m/33ft (space place)
Battery: 280mAh built-in rechargeable battery
Working Time: about 7 hours (depends on audio volume)
Charging: Micro USB 5V
Color: Black
Main Item Size: approx. 6.5*3.9*1.6cm/2.56*1.53*0.63in
Main Item Weight: 24g/0.84oz
Package Size: 9.8*9.0*2.0cm/3.85*3.54*0.78in
Package Weight: 70g/2.47oz

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