Intelligent and Fast Charging: input 12-24 Volt; Output 2 USB ports (PD 20W and QC3.0), allow for simultaneous rapid charging of 2 devices Special Design: large key for easy operation; 1.7 Inch large LCD backlight display song name/ incoming phone number and shows your car's battery level when car start; Can rotate the LCD display screen in 270 degree gooseneck for optimal viewing comfort; Turn off the FM transmitter: long pressing the next song key for 5 seconds, it will turn off the FM and functions keep charging function Broad Compatibility: this radio adapter works with compatible devices, like tablet, smartphones, you can transfer music in those devices to car audio via 3.5 mm audio cable; Support TF/ Micro card in FAT format up to 32G; Support A2DP; Support MP3/ WMA format; Also support AUX output High Clear Sound and Call Quality: adopted advanced interference and noise cancellation technology CVC technology creates full duplex sound and suppresses noise and wind; Built in microphone feature supports hands free talking reduce interference Features V4.2 and EDR: compared to earlier or older versions like V2.0, V2.1, or V3.0, V4.2 consumes much less energy and lasts much longer; EDR(Enhanced Data Rate), which ensures a faster data transmission rate and much more stable connection between a device and the audio receiver
Introduction:
The device is in-car MP3 player, equipped with good performance MP3 decoder chip.
It can transmit and play stereo music from the TF card to the car audio through the FM radio signal.
It can transmit music from mobile phone to the car audio.
The device sends the signal wirelessly, no need to modify your car.

Features:
1. Start the car, the screen will display the car battery voltage.
2. CVC technology to control noise and storm then to create full-duplex sound quality
3. Support the phone's A2DP function, the phone will play music directly when connecting
4. When the device is switched on, the phone can automatically connect
5. Support external TF card, can play MP3/ WMA format music files
6. Intelligent charging and high-pass fast charging program output, can be applied for car handheld equipment charging
7. Orange USB port supports QC3.0 PROTOCOL: DC3.5-6.5 Volts/ 3A, 6.5-9 Volts/ 2 A, 9-12 Volts/ 1.5 A
8. Blue USB port supports intelligent output current: 5 Volts/ 2.4 MA
9. Sound quality-Using the most advanced interference and noise cancellation technology to provide the most perfect sound quality.

Turn off the FM transmitter:
When no need to use the FM function, long pressing the next song key for 5 seconds, it will turn off the FM functions, the screen will be dark and keep charging function.

Specifications:
Vision: V4.2+EDR
Frequency: 2.4 GHZ
Sensitivity: -42 dB+/3 dB 360
Effective range: 5 Meter
RF output: 4 dBm
FM frequency:
FM: 87.5MHZ-108.0MHZ
Effective range: 2 Meter

Package includes:
1 x In-car FM transmitter compatible with Bluetooth
1 X 3.5mm Audio cable
1 X 3A fuse
1 x User manual

Note: the mention of brand name above is only for purposes of demonstrating compatibility.