Stream Music Through Your Car Radio: Play music from your mounted smartphone via Bluetooth or a memory card. CAD-9900 transmits streaming data to the car’s FM frequency and through speakers. Perfect for vehicles manufactured without built-in Bluetooth. | Hands Free Calling: Switches to hands-free mode automatically from music playback when receiving calls. Place and hear calls through FM stereo. Listen to crystal-clear audio while driving without earphones or phone speaker distortion. | Hassle-free Phone Mount: Adjustable clamps expand to securely fit your smartphone to mount while driving. Mount clips securely to A/C vent for distraction-free view of device. Rotates 360° for maximum flexibility | Connects to the 12V Socket/Lighter in car: Plug the FM Transmitter directly into your car’s built-in 12V cigarette adapter socket for operation and charging. A USB charging port is included to recharge your smartphone or other device.

Crystal Clear Music Streaming: You can stream your favorite tunes thru your car's stereo, anti-static and interference-free, via Bluetooth, USB Flash Drive (≤32GB), and/or microSD card (≤32GB). Advanced noise reduction technology will ensure brilliant interruption-free music. Note: APE, WMA MP3 WAV APE FLAC music formats in USB flash drive or microSD card are supported. | Answer Calls Hands-Free: High-performance microphone with Noise Suppression (CVC) technology, grants you a crystal clear call every time. Answering/redialing/dismissing or ending a call just simply click a button. CVC (clear voice capture) noise echo canceling and noise suppression technology helps transmit crystal clear voice quality when making calls. | Bluetooth V5.0 with Siri, Google, and Alexa Assistant：Providing added stability and more lasting connection without sporadic interruptions, Bluetooth 5.0 features echo-cancellation to reduce background noise giving clearer calls and supporting voice commands to ensure safer driving. You can also use Siri, Alexa, or Google Assistant to make phone calls, send texts or get driving directions. Enjoy complete voice-control and safer knowing your paying attention to the road and not your phone. | Intelligent Fast Charging & 3 USB Ports: With 2 USB ports (5V-2.4A and 5V-1A) and 1 USB-C PD Type-C 18W, you can charge three devices simultaneously. Built-in over-current protection, over-voltage protection, intelligent temperature control, short circuit protection, will effectively ensure safe charging. | Car Battery Voltage Detection: - Built-in intelligent voltage detection chip, detecting car battery voltage when booting. The FM transmitter will display the car’s voltage when plugged into the cigarette lighter. Keeping you in the driver's seat and informed of the car battery healthy at all times to avoid problems when driving.

Universal AUX Input: Regardless of what music-playing device you have, such as an iPod, Smartphone, MP3 player, or anything else, as long as it has an AUX input, you’ll be able to connect it to the adapter. | Front or Side Loading: There’s really no wrong way to insert the cassette adapter into your car’s cassette deck. You can either insert the adapter from the side or from the front. Ultimately, this allows the adapter to be compatible with different deck models. | 31 Inch Cable: The cassette adapter’s cable measures in at 31 inches, making it long enough to be used by backseat passengers. That way, if you have someone sitting in the back, you can let them connect their phone to the adapter and be the DJ during the ride! | Premium Sound Quality: The quality of the music’s sound isn’t going anywhere! Hear every note, every beat, and every word from your favorite bands and artists through your car’s speaker system. | A Modern Upgrade for a Vintage Ride: No need to invest in a modern vehicle! Even if you own an older car that still plays cassette tapes, you can play all the latest music through this adapter.

Makes Your Vehicle Bluetooth Capable: Update your auto with wireless Bluetooth functionality. Car and Driver’s FMX121 FM Transmitter links your smartphone and other streaming devices to your car speakers through the existing FM Signal. Wirelessly! | Hands-Free Distraction-Free: Drive safely and enjoy streaming music and hands-free calls through your car stereo. Simply plug FMX121 into your 12-Volt cigarette lighter socket, set your FM radio and the transmitter to the same station and you’re all set for a safer, more focused drive. | Fast-Charge 2 Devices Simultaneously: We’ve built two USB charging ports (type A and C) into the transmitter with 4.8 amps of total output, so you can easily power up two devices at once. | One-Touch Answer/Reject Calls: Enjoy distraction-free driving while switching seamlessly between streaming and calls with one button. Skip or repeat audio tracks and monitor your FM signal on the LED Display. All in a compact, low-profile design. | SD Card Mode: Older media still has a place in your automotive experience. Play music files from an SD card using FMX121’s dedicated Micro-SD slot.