Braun

Braun BT7420 | My Short Review

08 Jul 2025 — 4 min read

In my opinion the Braun BT7420 is a good trimmer for styling stubble, short and longer beard

After using the Braun BT7420 several times, I rate this model at 4,5 out of 5 stars.

What I like:

The blade. This model is equipped with a quality ProBlade. Really sharp, good trimming experience. It doesn’t cut super close to the skin, it leaves a stubble 0,5 mm to 1 mm long. The blade should be regularly lubricated to maintain sharpness and work efficiently.
Versatility. The Braun BT7420 set includes all attachments that are necessary for beard trimming, creating sharp lines, thanks to the presence of the Gillette shaver you can achieve a perfect shave too.
Precise length settings. Using 2 adjustable comb attachments you are able to pick your preferred trimming length in quite precise manner, meaning 0,5 mm increments.
Waterproof. Thanks to this feature, after trimming you can conveniently rinse the whole unit under the tap.

Not bad:

Adjustable comb attachments. There are two of them with ranges from 1 mm to 10 mm and from 11 mm to 20 mm. They sit on the blade pretty well, maybe some minor looseness which has no impact on the usability I guess.

Possible weak points:

The 2 fading comb attachments. To be honest I have never found this kind of combs useful. They are available also in some home grade hair clippers.
Travel case. It is well made, sturdy, elegant, but… so small. It can house the trimmer alone and if you try to fit in the adjustable comb attachment, you’ll have a hard time…

What are users saying about the Braun BT7420?

Sharp & Efficient Blades: Users report the blades are exceptionally sharp, providing a clean, precise cut that often doesn't require multiple passes.
High Versatility: The trimmer comes with a wide array of attachments, making it suitable for various grooming tasks including beard trimming, hairstyling, and body grooming.
Precise Length Control: The adjustable dial for selecting trimming length is highly praised for its ease of use and ability to provide fine-tuned results.
Long Battery Life: Many customers are satisfied with the long-lasting battery, noting it can power through several grooming sessions on a single charge.
Ergonomic Design: The trimmer is considered lightweight and comfortable to hold, making it easy to maneuver during use.

Plastic Construction: The most common criticism is the predominantly plastic build, which some users feel makes the trimmer seem less premium and raises concerns about its long-term durability compared to metal-bodied competitors.
Attachment Effectiveness: A minority of users found some specific attachments, particularly the smaller detail trimmers, to be less effective than anticipated.
Not Fully Waterproof: While the trimmer is water-resistant and easy to clean under running water, some customers expressed a desire for a fully waterproof design that would allow for use in the shower.