FM Transmitter, LDesign Bluetooth Wireless in-Car FM Radio

The MOST ADVANCED V5.0 BLUETOOTH TECHNOLOGY - The only Bluetooth V5.0 highest technology upgrade in the market, compatible for more devices, the most stable transmission, the best resisit-interference performance function and most superior durability.

FOUR MUSIC PLAY SOURCES -Bluetooth connected/ U disk/ TF card/ 3.5mm AUX cable, meanwhile, the bluetooth FM transmitter is compatible with most devices on the market, provides you more choices.

AMAZING HI-FI STEREO SOUND - Bluetooth car transmitter, the noise and wind suppressed by (CVC) technology with resist-static design create full duplex sound quality, grants you enjoyable for lossless music in car.

HIGH CLEAR CALL QUALITY - Built-in microphone feature supports hands-free talking reduce interference, the bluetooth fm transmitter for car also suitable for voice navigation for mobile phones, driving more easily.

VOLTAGE DISPLAY FOR SAFETY - Car voltage display in LDesign bluetooth FM radio transmitter screen should be between 12 ~ 14.8V. (13.2V ~ 14.7V when your car engine is start, 12.2V ~ 12.8V when your car ignition is off.) Furthermore, LDesign offered you the best lifetime assurance after-sale services.

This works fine. It has a fairly longer vertical extension before the 90 degree turn, which we need because our front seat SUV 12V is pretty deeply embedded in a sort of cavity. From the bottom of the socket to the bend point is about 3". (To me, this device bigger in person than it looks in pictures.)
1. Easy to pair bluetooth - it's device G7 and pairs in half a second on myiPhone BT function (I do have to got into BT and tap it on the phone screen).
2. Easy to set radio frequency. Tap CH (channel) and use up down arrows.
3. My bet is, any of these devices (whether more expensive or less) will have a little background static. Note that this is less noticeable when you are actually driving (wind noise etc). As the instructions state, turn up the device volume and phone volume and then regulate the vehicle sounds with the vehicle sound control. To turn up the device, hold down the + button for a bit and a volume readout will come on (+0 to +30).
4. If you have an incoming call and tap a phone button on top of the device, the second party will come on via the car speakers and your voice will be tracked by a pinhole mic in this device.

This device has a few bells and whistle, apparently it will play off a thumb drive or tiny memory card or with a 3.5mm AUX cable. It says it runs on 12V and 24V in the instructions. I wasn't entirely clear from Amazon Website, but the instructions do say that the USB plug you see on the top will both (a) charge a device and (b) act as a thumb drive. That's important because you might often want to charge your phone as a pass-through from the 12 V system via this device.

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I bought this for my mother, she recently purchased an older Durango that came with a deluxe sound system, meaning the radio would be very difficult to replace. But it only had a CD deck, so she couldn't listen to her Spotify in her car anymore. This was the perfect solution. There are many more expensive models out there with lots of neat features, but if you're simply trying to get personal audio to a car stereo, this is a simple and inexpensive option. The sound quality is fantastic, and despite it being mentioned in other reviews, I hear no background noise at all. The noise other reviewers report might be related to radio interference? I used radio-locator.com, which after entering your zip/city, has an unused frequency tool. I highly recommend using it to find the best station for your transmitter.

PROS
-Inexpensive
-Great sound quality, especially for the price
-Curved design makes it easy to fit in most cars, if you don't mind the display potentially being oriented weird
-Aux cable support, so you can save phone battery by not using Bluetooth

CONS
-The buttons/interface isn't very intuitive, and the instruction manual is a bit of a mess, but it's pretty easy to figure out