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Black rectangular FM transmitter with dual USB ports, LED backlight, digital voltage display, Bluetooth 5.0

ESTONE

ESTONE BC71 car hd radio Bluetooth 5.0 36W

SKU CH-3N4R-5B2EH MPN BC71

Connects to a factory stereo via Bluetooth 5.0 and FM transmission while delivering 36 W of total fast charging through QC3.0 and PD ports

  • FM usable sensitivity11.2 dBf
  • FM frequency response87.5 MHz-108.0 MHz
  • AM sensitivity21 uV
  • AM stereo separationBluetooth V5.0; Support dual display digital tube, real-time
  • Product typeHD Radio Kits for Factory Stereo
  • Highlights*PD 18 W+QC3.0 Fast Car Charging: PD18 W and QC3.0 port (5 V
  • Bluetooth 5.0 for stable wireless audio streaming
  • 36 W total fast charging via QC 3.0 and PD 18 W ports
  • Real-time battery voltage shown on dual digital display
  • TF card slot plays WAV and FLAC lossless files
  • Colorful LED backlights add cabin ambience

Car HD Radio Kit

The ESTONE BC71 is a factory-stereo HD radio kit designed for drivers who want modern connectivity in an existing dashboard. It adds Bluetooth 5.0 streaming, hands-free calling and lossless audio playback from TF cards. The unit includes dual USB ports for fast charging while keeping the original head unit in place.

Thermals Noise Power

The adapter draws a maximum of 36 W from the vehicle socket and splits it across USB-A QC 18 W and USB-C PD 18 W outputs. FM usable sensitivity is rated at 11.2 dBf across 87.5 MHz to 108.0 MHz, while AM sensitivity reaches 21 uV. No active cooling is required during normal operation.

Build Fit

A 30 mm gold-finger polyimide tape is supplied for high-temperature insulation during installation. The dual digital-tube display shows battery voltage in real time and fits a standard DIN opening without modification. Voice-assistant activation works through a dedicated button, leaving steering-wheel controls unaffected.

How it compares

Measured against everything we stock in HD Radio Tuners & FM Transmitters, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 70% of the 127 comparable items (median $27.99).

Specifications

Product
Brand nameESTONE
Model nameBC71
Product typeHD Radio Kits for Factory Stereo
Audio & video
FM frequency response87.5 MHz-108.0 MHz
More details
FM usable sensitivity11.2 dBf
AM sensitivity21 uV
AM stereo separationBluetooth V5.0;
Support dual display digital tube, real-time detection and display of battery voltage;
USB A QC 18 W and USB Type-C PD 18 W output ports;
Colorful LED backlights;
Support waking up the mobile phone voice assistant via button;
Stereo FM transmission technology;
Support TF card playback, support WAV/FLAC and other lossless music;
Support music, volume, and frequency power-off memory function;
Support Bluetooth automatic re-pairing;
Bluetooth supports A2DP, AVRCP, HFP, HSP;
Support private answering and switching;
Bluetooth stereo music DSP technology;
Support turning on/o

Questions about this item

How do I install the ESTONE BC71 and which step is often missed?

Insert the unit into the vehicle power socket, tune the car radio to an unused frequency between 87.5 MHz and 108.0 MHz, then set the transmitter to the same frequency — the matching step is the one most people skip.

What maintenance or replacement will the ESTONE BC71 need later?

No user-serviceable parts are listed; the device has no replaceable battery or filter, so only occasional cleaning of the USB-A QC 18 W and USB-C PD 18 W ports is expected.

What limit appears first during sustained use of the ESTONE BC71?

The combined output is capped at 36 W, so charging two devices simultaneously will hit that ceiling before thermal limits become an issue.

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