For the cost (12€) it's just OK.
For low speeds within the city it does its job satisfactorily.
Beyond that, low quality materials and construction (the battery cover doesn't fit), sound with some interference, as soon as I put on the helmet it comes off (doesn't fit in the ear).

Very low quality materials. From the first use, one microphone lost contact. The cable in the base broke.

The earphone is a bit uncomfortable in the ear and does not have particularly good sound quality at high speeds. It may be decent for its price.

I bought it and used it for a day in Pelion, up to 40-50km on a scooter, it was great....but then the air was coming in and you couldn't communicate comfortably....
Nevertheless, for the 12€ I paid for it, it was complete

Very clean sound...It needs a good helmet to have a chin strap...If you wear it with a hood, even better

It works up to 100 km. .. From there on, the mess begins. .. Also, it's not for a long time because the ear starts to hurt. .. For short distances and low speeds, it's worth it for its money.. Not anything more.

Not even half a euro is worth giving for these specific ones. The parasites start within the first 5 minutes and not from the noise of the air!!