CastFM Bluetooth Transmitter is a car audio electronics product available on the Whop marketplace, created by vaiir and launched in March 2026.

CastFM is a plug-and-play Bluetooth transmitter that streams music, podcasts, and calls through your car's FM radio. No installation. No aux cord. No hassle. **What you get:** - Bluetooth 5.0 connectivity for crystal-clear audio - Universal fit — works with any car that has an FM radio - Built-in microphone for hands-free calls - USB charging port to keep your phone powered Just plug it into your cigarette lighter, tune your radio, and pair your phone. That's it.

CastFM Bluetooth Transmitter has is priced at $19.99 (one-time payment).

CastFM Bluetooth Transmitter offers a 30% affiliate commission for promoters. Track CastFM Bluetooth Transmitter's estimated revenue, member growth trends, and competitive market position on Whop Trends.