Using FM Transmitter function:
1. Plug the Bluetooth FM transmitter into your vehicle’s cigarette lighter or power port.
2. Tune your radio to an unused FM frequency, then match the same frequency of this unit.
3. Insert a Micro SD card which containing MP3 files into TF card slot of this unit, It will play and transmit the MP3 files
automatically.
4. Line-out function: Plug the provided audio cable into car Aux-in port to connect with car system, Another connector to
the Aux-in port of this unit, When you using this function, The high quality music or phone call will come out from car
system.
5. Music bass boost function: Press the bass button to active the deeper bass when listening the music.
6. Shut Down the FM Transmission: If you don’t need the FM transmission temporarily, Please press and hold for 3
seconds to turn off, But the charging keeps working.
Using Bluetooth function:
1. Using Bluetooth for the first time, you need to pair your mobile phone with this unit. Activate your mobile phone's
Bluetooth function, then search new device. When the mobile phone detects this unit (named as "BT77D"), please pair
or connect by using the original password "0000"
2. On music playing mode, when there is an incoming call, this unit will automatically switch to telephone mode.
3. On music playing mode, simply press the “BASS”button to enjoy louder and deeper bass.
4. On music playing mode, press the “BASS”and hold for 2 seconds to switch the modes between Bluetooth and Micro SD
card reading.
Bluetooth calling:
1. Please press to answer the incoming call or hang off a call.
2. Please press and hold for 2 seconds during call to reject the incoming call in Bluetooth calling mode.
3. Please press twice to dial the last Number automatically.
4. When making a call, you can only dial the phone number by your mobile phone, but once the call connected,
you can use the hands-free function to enjoy it.
Using USB charger function:
This device with dual USB port for charging, One port is 2.4A, Another port is the quick charge 3.0. When this unit powered
from car lighter socket, connect the USB Charger port to your mobile phone or others device with a special USB cable (not
included).
About QC3.0 USB Port:
If your mobile support the Quick charge, it will charge based on Qualcomm QC 3.0 protocol, DC 3.5-6.5V/3A,
6.5V-9A/2A,9-12V/1.5A.
Here also listed the compatible Devices for reference:
Galaxy S7/S6/Edge/Edge Plus, Galaxy Note 5/4/ Edge, LG G4/G5,LG G Flex2,Nexus 6,HTC One M8/ M9,Droid Turbo, Xperia
Z3/Z3 Compact/Z3 Tablet Compact/Z4 Tablet and many more (please check the official Qualcomm QC product list for more
update)
But if you plug mobile which not listed among above, it will detect the phone voltage automatically and output
accordingly.
