Report item
Item specifics
  • Interface: 3.5mm,USB
  • Sound Track: Single
  • Support Apt-x: No
  • WIFI Standard: None
  • Model Number: BT4821
  • Feature: None
  • Support AAC: No
  • Package: Yes
  • Bluetooth Standard: Bluetooth v2.1
  • Content: Audio
  • Wireless Type: Bluetooth
Product Description

2016  new Original Mini Bluetooth V2.1 +EDR Audio Receiver Transmitter Stereo Dongle Adapter for TV iPod Mp3 Mp4 



Wireless Specification      
Bluetooth version :2.1+ EDR
Bluetooth frequency range    2.402-2.480GHz  
Effective range     Up to 10 meters ( 30 feets )
Bluetooth profile support   A2DP,SBC, MP3 and AAC,CLASS 2
Multipoint HFP    connection to 2 phones
Current ConsumptionOperational - Less than 18 mA (active)
Dimensions 50*24*8.5mm
Inner Li-battery 100mA

Package Contents

Bluetooth Adapter

USB  Cable

User Manual


Methods used
1.Turn on the Transmitter/Receiver Mode as you need,then long press the Multi-functional button,it will power on with blue light, and if you long press again it will power off with red light.

2.Receiver Mode:long press about 4s to power it on,it will be in the searching state and Red and Blue lights flash alternately;Search the device"Link-BT4821"and connect to it.You can play music wireless when it is paired,press the  Multi-functional Button to pause and press it again to play.

Notice:You should power it off when you want to swtich the function.

3.Transmitter Mode:Long press to power it on,it will be in searching state with Blue light flashing quickly.You can connect it with your TV,mp3,mp4,DVD players by using the 3.5mm audio cable.Turn on the Bluetooth receiver,and you will hear the Audio in the Bluetooth receiver after they have been paired.
Notice:You should power it off when you want to openthe function.

4.Connect Two Receiver:Transmitter Mode,turn off the first paired Bluetooth device and restart the adapter to pair the second Bluetooth device,then turn on the first paired device,connect with it.In this way,it can connect two receivers  at the same time.

5.It will be re-connected to the device that paired before when power on.When the device is out of the working range, it will disconnect, once the device back into the valid range, it will connect back  automatically .

6.When the device is in low power state, it will alarm;it will power off  automatically if the voltage is  below 3.0V.

7.Charging:connect with USB charging cable,the red indicator will light constantly;it will go out when finished.





1) We accept Alipay, West Union, TT. All major credit cards are accepted through secure payment processor ESCROW.

2) Payment must be made within 3 days of order.

3) If you can\'t checkout immediately after auction close, please wait for a few minutes and retry Payments must be completed within 3 days.   

1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO)
2. Orders processed timely after the payment verification.
3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address.
4. The images shown are not the actual item and are for your reference only.
5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season.
6. If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction.

1. You have 7 days to contact us and 30 days to return it from the date it was received. If this item is in your possession more than 7 days, it is considered used and WE WILL NOT ISSUE YOU A REFUND OR REPLACEMENT. There are NO EXCEPTIONS! Shipping cost is bear by both seller and buyer in half.
2. All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your po#.
3. We will refund YOUR FULL WINNING BID AMOUNT, upon receipt of the item in its original condition and packaging with all components and accessories included, AFTER BOTH Buyer and Seller cancel the transaction from aliexpress. OR, you may choose to have a replacement.
4.  We will bear all the shipping cost if the product(s) is (are) not as advertised.

1. 12 months Manufacturer`s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.
2. Defective items MUST BE reported and returned within the warranty period (and in the original packaging, if possible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY.
You agree to all of the above-listed policies upon ordering on aliexpress!

We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.
It is impossible to address issues if we do not know about them!




Packaging Details
  • Unit Type: piece
  • Package Weight: 0.1kg (0.22lb.)
  • Package Size: 15cm x 10cm x 2cm (5.91in x 3.94in x 0.79in)
Calculate your shipping cost by country/region and quantity.
Quantity: Ship to:
Packaging Details
  • Unit Type: piece
  • Package Weight: 0.1kg (0.22lb.)
  • Package Size: 15cm x 10cm x 2cm (5.91in x 3.94in x 0.79in)
We support the following payment methods. All payments made on AliExpress are processed by Alipay.