I was looking for a waterproof clock for regular swimming for losing weight. They should be easy (facilitates swimming motions), and I wanted to change the battery yourself, so I do not always need to watchmakers (unfortunately necessary in diver's watches). You Scuba Swatch watches have their own battery, and the change is simple. For 10 batteries (there were only in the multi-pack) I 2.50 EUR paid (ie 25 cents / battery). The Tovarish (Russian = comrade) was designed about 1995 and was one of the first scuba models. It provides various workers represent in images and is, like most first Swatch watches have really colorful. The clock is ticking exactly is hardly noticeable and striking. Through the images on the dial to tell the time, however, does not fall quite so easy, but is still possible. I would buy again.