Amazon.com Product Description:
The Casio Men's Solar Atomic Metal Watch #WVM120DJ-7 combines the classic styling of a dive watch with a sporty, full-featured digital interface. Versatile and reliable, this timepiece never needs resetting or batteries thanks to Casio's Solar Power and Atomic Timekeeping technology. With its classic dive style design (which includes features like a rugged stainless steel band with a fold-over-clasp), this handsome timepiece is ready for a day at the office or inspection by the ship's divemaster. The watch's reliable quartz movement is solar powered--which accurately keeps time up to eight months without further exposure to light. And if you're in the US, UK, Germany, or Japan, the watch receives time calibration radio signals (up to six times per day), so you always know your watch is set to the right time. Other technical features include three daily alarms, an LED light with Afterglow technology, a world clock with 29 time zones, four daily alarms , a 1/100 second stopwatch that records split time, a calendar (pre-programmed until the year 2099), 12- and 24-hour formats, and water resistance to 330 feet (100 meters).

Amazon.com Product Description:
The perfect training partner for your active sporting lifestyle, this Casio G-Shock men's digital sport watch (model GW700A-1V) offers a black resin case that's accented by a silver top ring and light digital gray display as well as a black resin strap. It's also solar-powered and wirelessly receives atomic time updates. It offers a 1/100-second stopwatch with a 60-minute measuring capacity and a time recorder with up to 30 records, It also features four independent daily alarms (with one snooze alarm), world time from 30 cities, and an autocalendar (to the year 2039). And because it's solar-powered--charging in either sunlight or indoor light--you'll never have to deal with changing the battery. Other features include a scratch-resistant mineral crystal, AfterGlow LED electro-luminescent backlight, and water resistance to 200 meters (660 feet)--suitable for recreational scuba diving.

This radio-controlled watch receives a time calibration signal transmitted from Fort Collins, Colorado, and signal reception is possible within a radius of about 2,000 miles from the Fort Collins transmitter. You can choose to automatically receive this signal four times a day, or manually update the watch to the atomic clock.

Amazon.com Product Description:
A stylish, sporty timepiece, this Casio casual men's watch keeps you in touch with Mother Nature thanks to integrated moon phase data and tide graphs. The aluminum watch case measures 40mm wide (1.57 inches), and it's complemented by a tapered black resin sport strap. It includes a stopwatch that can time events down to 1/100 of a second, and features a 100-hour capacity, split time, and 1st-2nd place times, as well as a countdown timer with a 60-minute capacity. Other timekeeping features include four daily alarms (with one snooze alarm), dual time, hourly time signal (which can be turned off), and 12/24-hour formats. This watch also offers a ±30-second accuracy per month, Afterglow backlighting, Auto Calendar (pre-programmed until the year 2039), and water resistance to 100 meters (330 feet)--offering protection from accidental splashes as well suitable for swimming, snorkeling, and light recreational diving. It has a battery life of up to 10 years.

Amazon.com Product Description:
Looking pristine in white, the Casio Men's G-Shock White Atomic Digital Sport Watch's rugged functionality might surprise you. This watch begins with a prominent 50mm white resin case, which cradles its digital display. Features include: solar power, multi-band atomic timekeeping, shock resistance, LED backlight, world time, daily alarm with snooze, chronograph functionality and water resistance up to 660 feet (200 meters). A sleek white resin bracelet wraps around the wrist before fitting into a buckle clasp.

Amazon.com Product Description:
You can be on time and in style with the Casio Men's Waveceptor Atomic Digital Watch #WV58A-1AV. Features include a digital gray dial face and a sturdy mineral dial window, as well as an easy-to-read time display and a handy day-date-and-month calendar. Other innovative features include an hourly time signal, a countdown timer, and a daily alarm. A sleek black resin band is accompanied by a secure buckle clasp, and both the stationary bezel and 43-millimeter case are made of stainless steel. Perfect for casual wear, this handsome timepiece showcases your high-tech aptitude. The watch is powered by digital-quartz movement and is water resistant to 165 feet.