Casio AQF100WD-9BV $55 Online. “Need to know the temperature? Want to know if it’s high tide or low tide, a full moon or a half moon? Keep in touch with mother nature while still having a sense of style. With its analog digital combination, world time, stopwatch, daily alarm and countdown timer, this watch is truly one you can take with you everywhere. Silver Casual Sports Watch with Analog/Digital Dial Code and Resin Band.” This watch is not going to win any awards for quality build or even feel. With rolled steel links and plastic case, but it’s cheap to buy and does a lot of interesting stuff. The watch includes a Tide Graph, Temperature gauge, Moon phase, countdown timer, stopwatch and more. It’s not bad for $50. The temperature modes can be shown as numbers or graph. It can also be calibrated to offset body heat. Moon and tide modes lets you see moon phase and tides in any part of the world. The watch is lightweight and some may say has a cheap “feel” to it, but it gives you a lot of info for only $50, those looking for a nice tide / moon / chrono / temperature w/graph watch should consider the AQF100 series. Technical Specs * Thermometer Display range: 14 to 140ºF, (-10 to 60ºC) Display unit: 0.2ºF, (0.1ºC) Thermometer Measurement Timing: During each even-numbered minute Memory Measurement Timing: At the top and the bottom of each hour Memory capacity: Up to 50 sets of data (time, temperature) Temperature tendency graph *Changeover between Fahrenheit (ºF) and Celsius (ºC) * 100 meter water resistant * Auto electro-luminescent backlight with afterglow * World time 30 time zones, 50 cities, city code display, daylight saving on/off * Daily alarm * Countdown timer Input range: 1 minute to 100 hours Measuring unit: 1 second Auto-repeat function * 1/100 second stopwatch Measuring capacity: 99:59’59.99” Measuring modes: Elapsed time, split time, 1st-2nd place times * Hourly time signal * Auto-calendar (pre-programmed until the year 2099) * 12/24-hour formats * Accuracy: ±30 seconds per month * Approx. battery life: 2 years on SR927W×2 * Module 4335 Size of case/total weight AQF100W–44.2 x 43.0 x 14.1mm/45g AQF100WD–44.2 x 43.0 x 14.1mm/108g AQF100WB–44.2 x 43.0 x 14.1mm/40g MORE PHOTOS: