The are almost upon us, and although the sales period isn’t due to officially kick off until Tuesday, July 16, some of the earliest are already live right now. Historically, Prime Day has been an opportunity to get the , , best running watches, or even at a sizeable discount, saving potentially hundreds of dollars or pounds. Cheap fitness trackers are also in the mix, so you can pick up a band like the or for a song.

However, the very cheapest deals are always reserved for watches with names on Amazon like (and this is verbatim) “ .” Catchy. The reason this smartwatch is named thus is so it shows up in more searches around these keywords, so a shopper looking for “fitness tracker with heart rate” will find it further up the list of results.

I’m seeing an increased amount of these very cheap watches this year, even on the “suggested” entries when I search keywords like “ Watch” or “ Watch.” Those keyword-heavy listings are working, and Amazon seems not to be punishing the stores for gaming the system, so they must be getting bought. I suppose it makes sense: after all, the similarly-priced $20 / £15 /AU$26 F-91W is the best-selling watch in the world.

The big difference here is that the Casio F-91W is notoriously ultra-reliable, as well as being ultra-cheap. I’m not going to wax lyrical about this (you can read my love letter to this here), but I can tell you these cheap smartwatches aren’t nearly as reliable as the humble plastic Casio. The Smart .