Edit 06/2024:
About six months later, the handle started to come apart and stain my hands with its color. It ended up in the recycling of electrical appliances.

Review from 12/2023:
I bought the same one again after 15 years. I wonder why. It is a technologically outdated machine, not worth even 15€, let alone the 30 they sell it for. For the body, it's just a scratcher, completely unsuitable. The quality of the heads is very poor because they don't fit well and constantly fall off, especially the small one that you can't use at all. The first one was better. It's good for beards if you want to trim them finely. It gets tangled in hair. It makes noise like Ash's chainsaw in Evil Dead. It doesn't get rid of hair quickly. Its base is practical. I wish its heads were too.

I had the Wahl GroomsMan 9906-2017 and it broke after 4 years. I bought this one here and it is incredible

Definitely not suitable for shaving, I use it as a trimmer for around the sensitive area and it's okay, the only thing that bothers me is that it has a lot of vibrations.

It is a very well-built device. Sturdy, with a steel blade and a variety of attachments. Exclusively for trimming and not for shaving. Since I bought it, I haven't had to charge it, which means its battery lasts a long time (I trim my beard every 1.5-2 weeks). It trims evenly and within ten minutes, you're done with trimming. An excellent advantage is that it works both plugged in and cordless. It's worth its money.