RIVERSONG Bluetooth 5.0 Receiver Transmitter, Upgraded 2-in-1 Wireless Aux Adapter, Hands-Free Car Kits 3.5mm Jack Bluetooth Audio for Audio Stereo System Headphone Speaker;

Specification:
S/N: 92db
Bluetooth: V4.1 A2DP, AVRCP
Frequency Response: 20 Hz - 22 kHz
Battery Life: Up to 5 hours
Charging Time: 1.5 hours

Pairing Steps:
RS BT-Receiver shall be paired and connected to your device before using.
1. Long press button MFB (1) for 6 seconds, RS BT-Receiver will be power-on and enter pairing mode, MFB (1) will flash red and blue when it is in pairing mode.
2. Activate Bluetooth function of your device and search for RS BT-Receiver;
3. Select RS BT-Receiver and enter password "0000";
4. Your RS BT-Receiver should now be connected with your device.
5. Each RS BT-Receiver has memory function and it will automatically connect to last connected device after it is turned on and Bluetooth function of your device is activated.

Attention:
If RS BT-Receiver could not be found on your Bluetooth Device List, please proceed Step 1 again and follow instructions below:
[DO NOT release your hand from button MFB (1) in 3 seconds and MFB (1) indicator only flash red and blue one time.]

Warm Prompt: Pairing mode only lasts 3 minutes once it is being activated, indicator flashed blue slowly will be out of pairing mode. To re-activate pairing mode, kindly turn it off and follow instructions mentioned above again.

One Year Warranty:
One Year unconditionally refund or free replace if defective or any quality problems, lifetime friendly technical support offered by RIVERSONG.
Login your amazon account > choose "Your orders" > find the order ID > click "Contact seller".

Package includes:
1* RIVERSONG Bluetooth Receiver
1* USB charging cable
1* User Manual.