I really liked the watch, at a price of less than $80, it was of excellent quality. Bezel is crisp, has a little play, I counted 90 clicks for a full rotation. The back cover is screwed on, as is the winding head. Water resistance for 100m is indicated on the cover. The automatic winding works, the mechanism is quite accurate.
Sapphire glass or not? I don't know, but the drop doesn't blur (maybe it's just oleophobic). The cyclops is centered, performs the function. In the dark, the indexes and hands glow quite well!
I recommend for purchase, especially on promotions and using coupons. The mechanism seems to be Chinese