The Casio STP

I love all the features, naturally, but there's more to love about this watch than just what it can do for you. Although it's not exactly a subtle timepiece, I think Casio did an excellent job on the design. It sits very comfortably on my wrist, and does not feel nearly as large as it is. All the buttons are well placed, big, easily accessible, and provide just the right amount of feedback. The sensors in the watch, which are located on the top left-hand side of the case, are inconspicuous, and reasonably well contained. The contour of the watch works both for my skinny wrist, and on some larger wrists I strapped it to for ergonomic testing. Electro-luminescent lighting. The PAW1200 series has a nice and bright illumination function which is pretty standard on digital watches these days. It also has another feature which I've come to love on Casios: the Auto Light Switch. To activate the Auto Light Switch, hold down the illumination button for three seconds (until the watch beeps), then whenever you tilt the watch face toward you at a 40° angle or greater, the watch will automatically illuminate. The resin strap is thick and sturdy, but soft and malleable, and it uses this new double pin system which I love the look of (two pins are used in the buckle rather than one). And finally, I just can't believe that Casio actually squeezed all this functionality into a single watch, all powered by the sun.