●●●Powered By USB Charging (No built-in battery )
We recommend that you use a 5V1A charger to power the adapter to avoid insufficient voltage and current, which may cause current sound or noise when the adapter is in use.
●●●It's a VIKEFON Bluetooth audio receiver only, not a transmitter. Can only be used for audio transmission,So you couldn't use it for your keyboard, mouse, file transfer.
(The function of the Bluetooth receiver is to add Bluetooth wireless function to the wired speaker/headphone, so that the Bluetooth-enabled device such as the mobile phone can be wirelessly connected to the wired speaker/headphone through the adapter.)

Product Features:

1.NFC Sensor Pairing Connection, built-in NFC sensor chip, close to the second automatic pop-up window, compatible with all kinds of NFC feature phones, reducing tedious operations.
2.Auto On:When you connect to the power, So its very good for to use in car or other you want it have auto on functions.
3.Connect two devices: Support to connect with 3.5mm audio port and R/L RCA audio port at the same time.
4.Wireless Music Streaming: Stereo stream music to non-Bluetooth headphones and speakers.
5.Space-Saving Design: Ultra-compact and lightweight for convenient use with a variety of devices.
6.Super Stable Connection: Our Bluetooth audio adapter is fitted with a Bluetooth 5.3 chip for steady pairing, fast transmission and a wide signal range (33 feet). With the 3.5mm AUX port and 2RCA port, it can be connected to non-Bluetooth car audio systems, home stereo, wired headphone/speaker, Amplifier/Home Theater.etc. Then you can enjoy wireless Hi-fi music streaming!
(Note: It's a VIKEFON Bluetooth receiver only, not a transmitter. So you couldn't use it for your TV, keyboard, mouse.)
7.Hands-free Calling & Navigation Broadcast: A built-in microphone for hands-free calls; One simple button to answer/redial/hang up/reject calls. Besides, the VIKEFON Bluetooth car adapter supports broadcasting voice notification from existed navigation App, you don't need to look down the phone to ensure safe driving.
8.Upgraded to support USB U-Disk/TF Card play.
9.for wired speaker/Home speaker/power amplifier/headphone/car kit ect...
10.Note: No built in battery,So POWERED BY USB-C CHARGING.

Product Parameter:

Brand: VIKEFON
Product Name: NFC Bluetooth 5.3 Audio Receiver
Output Parameter: DC 5V
Bluetooth Version: V5.3 + EDR
Bluetooth protocol: A2DP/AVRCP
Bluetooth distance: 10 meters
Interface: Watch L RCA/3.5MM AT Stereo/USB U-Disk/TF Card/
Support Mic: Yes,With Microphone Handsfree Calling
Frequency range: 10Hz-20kHz
Signal to noise ratio: >110dB
Product Size: 68mm * 58mm * 21.8mm
Function description: with microphone hands-free call, NFC connection,USB U-disk play,TF card play,Bluetooth connection.
Support Multiple Audio Output Ports: Can Connect With 3.5mm Headset, Stereo System, Speaker.
System Support: All Bluetooth audio device; NFC Available Device.

Package List:(Standard Edition)

1x NFC Bluetooth 5.3 audio receiver adapter
1x3.5mm To Cable
1x Type-C Power Cable
1x User Manual

Package List:(With RCA Cable Edition)

1x NFC Bluetooth 5.3 audio receiver adapter
1x3.5mm To Cable
1x Type-C Power Cable
1x User Manual
1x RCA Audio Cable

Note:
●TF/SD Card not included
●Powered By USB Charging (No built-in battery )