With this device, you can play music & answer phone call in your car or through your own stereo from your smartphone, MP3, tablet, etc. The best wireless experience ever!

Features:
High performance bluetooth technology: Music & phone call, free and relaxed. Super clear sound and flow conversation effect. Turn your regular stereo audio devices into a Bluetooth-enabled, wireless receiver streaming machine through 3.5mm audio-out jack.
Plug and play, so easy to install: With 3.5mm audio plug, you can easily connect to cars, stereo, etc.
Simple operation: Simple and easy wireless set-up, automatically connect, normal speaker become hands-free bluetooth speaker magically, portable bluetooth car receiver.
Mini portable design: Take it with you and enjoy bluetooth music anywhere anytime.
Work with any devices with bluetooth function: can connect to most cellphones, tablet, etc.
Multifunction button: One tap for play/pause, double tap for next song. There's LED working light on the button. Convenient to operation.
Can connect to 2 devices at the same time.

Specificatins:
Bluetooth: CSR4.0
Operating distance: about 10m (empty space)
Working time: about 6 hours
Charging time: around 2 hours
USB cable length: approx. 95cm
Audio cable length: approx. 94cm
Support: A2DP, AVRCP, HSP, HFP
RF frequency range: 2.4GHZ-2.48GHz
Operating environment: -10℃ to +50℃
Package size: 14 * 9 * 2cm / 5.5 * 3.5 * 0.8in
Package weight: 80g / 2.8oz

Package list:  K3986
1 * Audio Receiver with 3.5mm Plug
1 * USB Charging Cable
1 * 3.5mm AUX Audio Cable
1 * Enlish User Manual