It works normally just like the original, except that it loses the time and settings when the batteries are removed (the original has a capacitor inside that keeps them for quite a while, until the new batteries are inserted; this one does not, and its circuit board is different). However, I expected it to arrive in anthracite color as in the photo, and it came in gray/silver instead (which is sensitive to scratches). Also, its screen has a slight vertical shadow in the center that does not prevent reading the display, but it is a sign of long-term exposure to high temperatures (before it reached me). Also, it arrived packaged loose in the courier bag, with absolutely no other packaging or protection of its own, not even a box, nor bubble wrap, nothing! I don't know if this is an issue with this particular store. Too bad, because it is a good and economical solution compared to the original (which is not easy to find anymore).