FM Car Transmitter Retoo E676 with Bluetooth, MP3, USB, SD Card and LCD Display, Car Charger

Retoo E676 is an FM car transmitter and charger that integrates Bluetooth wireless audio streaming, MP3 playback from USB or SD card, an LCD display and a USB charging port. It connects wirelessly to a smartphone to send calls and media to a vehicle radio via an FM frequency, while also supporting direct playback of MP3 files from removable storage and charging of mobile devices. The compact form fits into a car power socket and provides basic controls for track selection, volume adjustment and call management.

Advantages

The device provides a simple way to add Bluetooth hands-free calling and wireless audio streaming to cars without built-in Bluetooth, while offering MP3 playback from USB sticks and SD cards. The integrated USB port supplies power for charging smartphones and other USB devices. The LCD display shows frequency, track information and connection status, making it easier to tune and control playback. Combined functionality reduces the need for multiple accessories.

Suitable for

• Vehicles without factory Bluetooth that need hands-free calling and audio streaming
• Playing MP3 files from USB flash drives or SD cards through a car radio
• Charging smartphones, GPS units or other USB-powered devices while driving
• Users who prefer a plug-and-play FM transmitter with a visible LCD for quick setup

When it may not be suitable

This FM transmitter relies on broadcasting to an FM radio frequency, so audio quality and stability depend on local radio interference and the vehicle radio’s ability to tune to the same frequency. In areas with heavy FM congestion or strong local stations, finding a clear frequency may be difficult and audio may suffer from static or dropouts. The product is not a factory-integrated Bluetooth solution and does not replace vehicle systems that provide advanced audio integration or steering-wheel controls.

Key specifications

• Functions: Bluetooth audio streaming, MP3 playback from USB/SD, FM transmitter, USB charging
• Display: LCD showing FM frequency and playback information
• Inputs: Bluetooth wireless input; physical USB port for playback and charging; SD card slot for MP3 files
• Power source: Car 12V power socket (cigarette lighter socket)
• Control features: Track forward/back, volume adjustment, call answer/end

How to use

Plug the Retoo E676 into the vehicle’s 12V power socket. Set the transmitter to an unused FM frequency shown on the LCD. On your smartphone enable Bluetooth and pair with the transmitter according to the device pairing name. Once paired, play audio or make a call on the phone; the audio will be broadcast to the car radio tuned to the same FM frequency. For MP3 playback, insert a formatted USB flash drive or SD card containing MP3 files; use the device controls to select tracks. Connect a USB cable to the USB port to charge a mobile device while driving. Follow on-screen indicators for connection and playback status.

What to consider before purchase

• Confirm your vehicle has a working FM radio capable of tuning to manual frequencies
• Expect audio quality to vary with local FM interference and radio reception
• Check that your USB drive or SD card is formatted and contains compatible MP3 files
• Verify the USB charging output meets your device charging requirements

Usage recommendations

Choose an FM frequency with minimal local stations for the clearest audio. Place the transmitter securely in the power socket to avoid accidental disconnection. Keep firmware and phone Bluetooth settings up to date and use high-quality USB cables for the best charging performance.