Oris Atelier Worldtimer

And considering the fact that the GW-400J doesn'thave a lot of power or space to work with, I think it performs admirably, thoughnot was well as the much larger and power hungry vibrating TissotHigh-T.I like the fact that the thermometer can be used for measuring both airand water temperature, although I really wish I could toggle it from Celsiusto Fahrenheit. Admittedly, I can't really blame the watch or Casio for thissince it was never meant for an American audience, however one thing I can blamethe watch for is the fact that you don't seem to be able to reset the thermometerto its factory calibration. I was always able to feel the alarm, but the hourly timesignal vibration only grabbed my attention less than half the time. And if you wereplanning on using the vibrating alarm as a way to wake yourself up in the morning whileallowing your partner to sleep in, you will need to be one incredibly light sleeper.I think the GW-400J generally serves the purpose for which it was intended, however,which is the ability to keep track of time, events, and intervals while participatingin water sports when wind and waves would keep you from hearing a faint high-pitchedbeep. The x-axis representstime over a 24-hour period, and the y-axis represents the height of the tide.The tide indicator function of the Casio GW-400J is kind of cool. Since I can'tread the instructions, and I don't have any other watches with tide graphs, I don'tknow exactly how it works, but it seems fairly intuitive.