I work in a mechanical test lab and use the stopwatch feature for work. On occasion the watch has seen impacts and has been dropped a number of times. I have had a number of instances where I immediately thought "that's gonna scratch the glass face", but its never happened. Glass face is hard as nails, made of mineral glass and mine has not one scratch in it. It shines to mirror finish.

Other plastic surfaces have worn only slightly and its quite hard to tell that this watch is several years old by
just looking at it. Good job Casio!

Two no like issues:
I think the only real quality issue with this watch was the EL back light, which no longer works on my watch. I thought it novel that you could set up the watch to turn your wrist towards you and the back light would automatically let you read the time. But, this feature is a battery killer and i found myself so frustrated with the resulting low battery life that I almost sent it back to Casio. Read the manual and it pointed out this reality and so i felt I should just turn the feature off and my battery life improved. I don't think the watch, in my case, was usable with the EL back light due to my limited time outside to charge it and my less limited time outside working near dusk.

The other issue was to a lessor extent, the battery. I bought my watch when they first came out in the U.S. My battery life has been no more troublesome than a small little pebble in one's shoe. You know it's there with every step, but so minor you don't bother with it. The battery life is limited and will sometimes discharge necessitating my paying attention to it so that it gets either some added sunlight or I set it on a window sill during the day for an hour(when I want to wear it). But the battery has many years on it now and is still original.

I will say that enjoying this watch has a little bit of a learning curve. If I don't get outside during daylight for at least 15 minutes a day, then it will discharge to the middle charge level over several days time. I can easily notice that and change my habits just slightly to correct it. Not a major inconvenience, and maybe not even a minor convenience, but the Engineers at Casio could improve the efficiency of the solar cell and battery by 10% and i think it would be a non-issue for almost anyone. I give this watch 4 stars because of the 5% of me that doesn't like to conform to the solar needs of the watch and the EL backlight that no longer functions, but I still really like this solar atomic watch.

Some things to like: solar powered, very long battery life of at least 5 years (so far), great looks, stainless steel tough watch band, never have to set it, automatic daylight savings time setting, very tough and water proof.

Hints for use: In U.S. aim the 12 o'clock (antenna) towards a window so it auto calibrates. Window should face towards Denver, Colorado which for me is near a West facing window. You can also manually calibrate the watch if the battery suddenly dies and you recharge on a window sill only to find it is not desireable to have an uncalibrated watch on your wrist. Takes about 2 minutes on a window sill to get itself calibrated.

I think one other reviewer complained about how he could not figure out how to remove links from the watchband and took it to a jeweler who also could not figure it out. I too, could not figure this out when I first got the watch. The band has blind installation of it's link pins.

What to do? Well, logic would have it that looking at the band, one quickly can see that from the watch body, the wide band gradually tapers down in width until it reaches the width of the clasp for the remaining several links nearest to the clasp. This watch band has hidden pins that you have to feel for, more so than see, to remove. I used a sharp surgical thin blade knife meant for hobby use to find the blind pin installation and by holding two adjacent band links in opposite directions, a very small gap appears to open up, allowing you to view the small diameter pin. You can use the thin blade to get into this gap and hold, then push the pin out of the way far enough to release that link from the band. If you have ever replaced watch band yourself then you can imagine what you need to do better than I can describe it here. It helps to have a hands-free magnifier handy. Its not obvious, but it can be done at home with some effort and patience. I had to remove several links in the band when the watch was new so that it would fit my wrist. Not as hard as you think, but realize some of it is intuitive, based on having some knowledge of taking things apart in your youth.