Do you have a car without Bluetooth? This Alza product will solve it, it has never been cheaper

If you own an older car without Bluetooth and finally want to listen to music from your phone or make safe calls in it, an FM transmitter is the easiest way. The AlzaPower F120 has now dropped from 549 Kč to 412 Kč with the discount code ALZADNY25 – and this is a historical low, meaning the lowest price this specific model has ever reached. It’s not an unknown product either: over 10,000 units have been sold and it has 359 customer ratings with an average of 4.5 out of 5.

Quick summary:
✅ Makes sense if you have an older car without Bluetooth and want to easily listen to music from your phone and use handsfree at an affordable price.
⚠️ Consider if you are an audiophile – FM transmission has its acoustic limits, and several users report mono output.
💡 At 412 Kč, this is the lowest price this model has historically been at, and in its price range, it is one of the best-selling choices.

Why this transmitter is interesting

The key is the ratio of price, features, and proven reliability. AlzaPower F120 offers Bluetooth 5.2, two fast-charging ports, RGB backlighting, and voice assistant support – features that competitors often cut back on in this price range. It is also one of the best-selling FM transmitters in the Czech Republic: the figure of 10,000+ units sold combined with a return rate of just 1.01% is a very low value for this type of accessory.

The second reason for interest is the price development. The model typically stays at 549 Kč, has long been around 450–500 Kč in promotions, and the current 412 Kč is the lowest price in its history. In addition, the manufacturer provides a 36-month warranty, which is one year more than the legal standard.

Key parameters explained simply

Phone connection is handled by Bluetooth 5.2 with automatic pairing after the first connection. The transmission frequency to the car radio is tuned in the range of 87.5–108 MHz – just find a free frequency and set the same value on both the transmitter and the radio. Additionally, you can play music from a USB-A flash drive or Micro SD card (max. 32 GB, FAT32) in MP3, WMA, and FLAC formats, so you don’t always need to have your phone at hand.

Charging is handled by two ports: USB-C with Power Delivery support up to 20 W and USB-A with Quick Charge 3.0 / Apple 2.4A up to 18 W. When both ports are used simultaneously, the power drops to 5 V / 3 A (15 W) divided between both outputs. The transmitter has a built-in microphone for handsfree calls, supports Siri, Google Assistant, and Bixby, and additionally displays the car battery voltage on a small screen, which is useful for an approximate check of the onboard electrical system’s status.

Practical aspects: dimensions, design, minor details

The transmitter has dimensions of 81 × 53 × 44 mm and weighs only 43 grams. The RGB backlighting around the perimeter can set multiple colors, including a smooth transition mode, so you can match it with your dashboard lighting. It works in cars with both 12V and 24V installations, so you can use it in a passenger car or a utility vehicle.

A practical detail that some users point out: the plug for the socket is not extremely long. If you have a 12V socket in a deep recess (typically some Škoda Fabia 1st generation, Citroën Xsara Picasso, and other models with a recessed ashtray), there might be an issue with fitting it. Before purchasing, it’s worth checking if your socket is accessible. Safety features include 4safe protection against overvoltage, overload, overheating, and short circuit.

What users say

Out of 359 ratings, the average is 4.5 out of 5, with 233 customers giving full marks and 86% of users recommending the product. In 120 text reviews, repeated praise is given for fast Bluetooth pairing, microphone quality during handsfree calls, RGB backlighting with the option to match it to the dashboard, and ease of use. One long-term user (Jakub, Beroun) writes: “I’ve been driving with this transmitter for two years, and so far it has lasted longer than the car I originally bought it for.”

Critical voices primarily concern three things. The first is sound quality – several users (Petr from Unhošť, Martin from Prague 5, David from Brandýs) state that the transmission is practically mono, not stereo. This is a general technical limitation of FM transmission, but if you prefer full stereo sound, it’s good to be aware of it. The second complaint: the display backlight cannot be turned off; at night, it reflects off the windows and can be distracting – several users would welcome brightness control. The third: with some units, users report a faint hum or whistling at higher engine RPMs, typically when the selected frequency is close to a radio station.

The return rate of 1.01% is very low, so the occurrence of truly defective units is an exception, not the rule. An interesting piece of advice is repeated across reviews: if you hear static, change the frequency – the correct free one in a given region eliminates interference and whistling.

If the F120 specifically didn’t appeal to you, but you’re looking for an FM transmitter or car accessories on sale, you can also check out the current Alza Days. The offer also includes a cheaper F100 variant for 374 Kč and a higher F140 model for 524 Kč with Bluetooth 5.3 and an RGB display, which some users say plays noticeably better.

When this transmitter doesn’t make sense

If you have a modern car with Bluetooth or Apple CarPlay / Android Auto, an FM transmitter is a step backward – transmission via FM frequencies is inherently a compromise and will never be as high quality as a direct Bluetooth connection to the radio. Second situation: if you care about full stereo sound in audiophile quality, it’s better to invest in a car radio with Bluetooth or AUX input and a wired connection.

The third dealbreaker is a deeply recessed socket – if your 12V power outlet is in a nook where a short plug won’t fit, this model is not an ideal choice, and you’ll have to look for a transmitter with an extension cable or a flexible neck. And finally: if you want to use the device for long-distance travel across multiple regions, be aware that the available frequency changes between regional areas, and you’ll occasionally have to retune it.

Verdict: who it’s worth it for

The target group is clear: owners of older cars without Bluetooth who want to connect their phone to the car radio at a reasonable price, have handsfree available, and also a second charging port in the car. For 412 Kč – at the model’s price minimum – you get a proven solution with positive reception from hundreds of customers, a three-year warranty, and a low return rate. The F120 won’t be a high-end audio solution, but for everyday use, it’s more than sufficient, and in this price range, it’s one of the best-selling models in its category in the Czech Republic.

Are you connecting your phone to an older car with an FM transmitter, or are you already planning a more modern car radio with Bluetooth?