1. Product model: BT-350
2. Product material: plastic + metal
3. Product color: black
4.Interface type: 3.5mm
5. Bluetooth version: Bluetooth 5.0
6.Features: support for connecting headphones, mobile phones, speakers, and cars
7. Product size: 5 * 2 * 1cm
8. Product bare weight: 11g (Bluetooth receiver + metal adapter)
9. Total product weight: 25g (Bluetooth receiver + metal adapter + cable + manual + PP bag packaging)
10. Product packaging: sealed PP bag
11. Product functions: Bluetooth receiver, car Bluetooth receiver, car Bluetooth receiver, AUX Bluetooth receiver, audio adapter
Instruction for use:
I. Power on / off
    (1) Switch on: Press and hold the on / off button for 3 seconds until the blue LED light starts to flash.
    (2) Turn off the power: Press and hold the on / off button for 5 seconds. The red LED indicator will light up and then go out.
    Note: Read the user guide of the transmitter or mobile phone to learn how to turn on / off Bluetooth wireless technology.
    2. Pairing
    If this is your first time using this device, please configure it first.
    (1) To enter pairing mode, press and hold the on / off button (button1) for 5 seconds until the red and blue LEDS flash.
    (2) Search for a music receiver on your phone or compatible transmitter. Touch and hold a button to turn on the power and it will automatically search for compatible transmitters; if connected to an Apple or Android device, you do not need to enter any code, and the LED light below the button indicates the device and charging status.
    (3) The devices should now be able to identify and pair with each other. After successful pairing, the LED on the music receiver will slowly flash blue.
    (4) To complete pairing, some devices require a password or passcode, please enter "0000".
    (5) After successful pairing, you can power off the device. To reconnect, just power them on, and you don't need to pair them again.
    Note: If you want to use the music receiver with another transmitter, you must restart the pairing process with the new device from the first step. After pairing a new transmitter, the old transmitter will no longer be paired with the music receiver and only one device can be connected at a time.
    3. Play music
    (1) Connect the music receiver to the auxiliary (AUX) input of your home or car stereo using the supplied audio cable and adapter.
    (2) Make sure that the transmitter (mini jack, mobile phone, PC, PAD or compatible signal source) is turned on and paired with the music receiver, and the distance between the devices is not more than 10m.
    (3) The blue LED on the music receiver will flash slowly, indicating that it is connected.
    (4) Press "Play" and the music will be sent to the music receiver wirelessly.
    4.Charging
    (1) Connect the little end to the mini-USB input of the music receiver using the supplied USB cable.
    (2) Connect the other end to the USB input of the PC, laptop or USB power converter. The LED of the music receiver will light red during charging.
    (3) After charging is completed, the red LED will go out. Provides up to 6 hours of playback time when fully charged.
ADVANCED BLUETOOTH RECEIVER: Upgraded Bluetooth technology not only provides a faster and stable connection to the devices, but also ensures high-quality sound, offers a good performance within 33ft operation range
PORTABLE MINI DESIGN : Lightweight and compact mini design makes it space-saving and could easily take with you while traveling.
WIDE COMPATIBILITY : Compatible with Most Bluetooth Enabled Devices. Receives Bluetooth signal from the cellphones (iPhone and Android), tablets, laptops or Bluetooth transmitter, great for making your non-bluetooth car vehicle stereo, headphone, older home stereo system Bluetooth enabled
CONVENIENT DUAL CONNECTIONS : Enjoy an easy and quick switch between two devices actively connected to the Bluetooth adapter and play music from either devices; straight-forward control button design
BETTER CONNECTIVITY : Equipped with the reliable Bluetooth 4.1 for faster and more stable connectivity, this Bluetooth car adapter supports A2DP, AVRCP, HSP, and HFP.