This product left me with mixed impressions.  I'd bought it because I liked the look a lot, and on a practical level, it would solve the problem of wearing a wristwatch with tight fitting jacket and coat cuffs.  It looks great and for the money it's a nice everyday accessory, but as a timepiece, it's the most miserably inaccurate and unreliable watch I've ever owned.  On occasion it has lost a half-hour over the course of four hours despite being wound, (and in that case, just to be sure, I wound it but three turns before feeling resistance).  I have also noticed that on some days it seems fine...quite reliable, and on the next day loses 5 minutes here and 15 there which is both inconsistent and unexpected.  My only other complaint is that I noted the clip had bent the first time I attached it to clothing, and the feel when bent back made me suspicious that it might soon break from metal fatigue.

I rated the item 3 stars because I still like the looks for the cost, but if your goal is to have a reliable timepiece, then 1 or 2 stars is probably more accurate for your needs.  I figure that if the proper time is critical, I'll check my cell phone instead.