feature:
Automatically switch from music playing state to hands-free mode when answering a call
Built-in microphone
Robust design with LED frequency display
Support last call redial
Instructions for use
1. Insert the cigarette plug into the cigarette socket of the car, insert the mp3 bluetooth, and then flash the screen
2. The mobile phone enters the mobile phone settings for Bluetooth, connects to BT28, and the voice prompts that the connection is successful
3. FM shunting radio frequency is the same as MP3 Bluetooth
4. Mobile phone music player, can play music through the car speaker
keyboard

1. Short pause/play button
2. When there is an incoming call, short press to answer the call (long press to answer the call); when calling or marking a scene, short press to raise your hand; short press twice to remember your last call.
3Frequency and purpose: long press for 3-5 seconds, when refreshing the screen, at this time, press a track,/previous paragraph to change the transmission frequency
4. Volume adjustment: Press and hold for 3-5 seconds, when the screen flashes, at this time, long press a track/to change the volume

specification:
Type: ABS project
Type: Bluetooth
Features: FM transmitter
Product size: 3.5 * 3.5 * 8 cm / 1.4 * 3'' (length * width * height)
Product model: BT28
Supported files: MP3 / WMA / WAV / APE / FLAC
Supported U Disk Capacity: Class 10, up to 32G
USB output: Maximum 5V / 3.6A
FM frequency: 87.5-108MHz
The package includes:
1×Bluetooth FM transmitter