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Compact black car charger with two retractable cables and multiple USB ports

SuperTooth PT-21 Bluetooth 5.3 FM Transmitter with Retractable Cables

SKU CH-H9CY-W3Z39

A Bluetooth 5.3 FM transmitter with two retractable cables delivering 30 W USB-C and 12 W Lightning charging up to 80 cm long

  • Product typeEarbuds
  • DetailsBluetooth 5.3, FM Radio, iPhone 17/iPhone Air/iPhone 17 Pro/
  • Key featuresCharging Indicator, Fast Charging, Retractable Plug, Multi D
  • Bluetooth 5.3 gives faster, more stable pairing with less sound loss
  • 30 W USB-C and 12 W Lightning retractable cables reach 80 cm for tidy charging
  • 90 W total output across five ports powers multiple devices quickly
  • FM transmitter adds hands-free calls and music streaming through car speakers
  • Cables retract smoothly into the unit keeping the cabin clutter-free

SuperTooth PT-21 Bluetooth 5.3 FM Transmitter

This device combines an FM transmitter with a multi-port car charger for drivers who want hands-free calls and fast charging on the move. It supports Bluetooth 5.3 for a stable link to a smartphone and streams audio through the vehicle's radio. The unit is designed for use in a standard 12 V accessory socket.

90 W total output with dual retractable cables

The charger delivers up to 90 W through its USB-C port and includes a 30 W USB-C plus a 12 W Lightning retractable cable that extend to 80 cm. Five ports allow simultaneous charging for multiple phones or tablets. Power drops to standard USB rates when non-PD devices are connected or when all ports are heavily loaded.

Retractable cables remove cord clutter

Built-in USB-C and Lightning cables retract into the body, so no separate leads are needed for common Apple and Android handsets. The mechanism keeps the cabin tidy and speeds up connection when entering or leaving the car. Users with USB-C only devices or older Micro-USB gear must supply their own cables.

How it compares

Measured against everything we stock in Bluetooth Earbuds & Headsets, at today’s prices. Recalculated every night.

Price $32.99
Typical for this category: the median of 870 items is $30.99.

Specifications

Product
Brand nameSuperTooth
Product linePT-21
Model namePT-21
Part numberPT-21
Product typeEarbuds

Questions about this item

Will the SuperTooth PT-21 Bluetooth 5.3 FM Transmitter work with my iPhone 12?

Yes, the transmitter supports iPhone 12 and earlier models listed, pairing in about one second via Bluetooth 5.3 and reconnecting automatically after the first pairing.

How can I confirm the SuperTooth PT-21 is transmitting audio correctly once installed?

Tune your car radio to the same FM frequency shown on the transmitter, play music or take a call, and listen for clear sound through the car speakers with no noticeable delay.

What cables come with the SuperTooth PT-21 and what must I provide myself?

The box includes a 30 W USB-C retractable cable and a 12 W Lightning retractable cable, each extending to 80 cm; no extra cables are required for charging supported phones.

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