Classic vibes and today’s technology come together in the all-metal Casio GMWB5000D-1, an evolution of the original G-SHOCK that set the standard for the digital adventure watch back in 1983. It was tough as nails during the Cold War era, and today’s GMWB5000D-1 takes on the Digital Age with smartphone integration via Bluetooth, automatic time zone and Atomic Clock alignment and a solar charged battery. The handsome brushed and polished stainless steel case will resist water up to 200 meters and, of course, is totally shock resistant, making it a thoroughly rugged companion for the most rugged of globetrotters.

In a world increasingly full of less-than-stylish tech-focused watches, the GMWB5000D-1 will never let on that you’re wearing a high-tech, modern device. Instead, this watch is a wrist-worn conversation starter, a good-looking curiosity and a subtle style statement. The case is a big part of this story, with its brushed and polished stainless steel surfaces gleaming, and the bracelet — which is also a tribute to that on the original G-SHOCK — elegantly hugging your wrist with its meticulously finished links.

Though it hides its technology well, the GMWB5000D-1 is a true wolf in sheep’s clothing. The LCD display is a super-twisted nematic unit, or STN, which require less power than standard LCDs. Lighting for the LCD is provided via a rear-mounted Super-Luminator, which is bright and, like the screen itself, highly efficient. These features make the solar charged battery strong enough to offer over a month of power when fully charged, giving the watch virtually limitless power in the dark and freeing you from the hassles of a dead battery. Not changing the battery also means the case seals will never go through unnecessary stresses that can cause leakage of the 200-meter rated case. Those seals are held in place by a black DLC coated solid caseback with enough specifications listed to make the rear view surprisingly compelling.

As a Bluetooth® Connected watch, you can adjust the watch features on your phone via the G-SHOCK Connected app. You’ll also get the most accurate timekeeping known to humankind. The GMWB5000D-1 calibrates itself to the world’s six main Atomic Clock broadcasting points (when available, based on your location), and the number of cities and time zones and daylight-savings regimens available is exhaustive; but you don’t have to think about any of that, as the watch sets it all automatically, automatically approximately 4 times a day via Bluetooth by connecting to the G-SHOCK Connected app. Your calendar will stay on target until the year 2099, accounting for leap-years with no user input.

The five onboard alarms (including one snooze alarm) will be a great friend when you’re looking to stash your phone away at night, and the stopwatch, which will split your timings down to 1/100th of a second (provided you stay under one hour of timing), will provide an entertaining blur of digital numbers. Stopwatch functions include elapsed time, split-time (good for laps and intervals), 1st-2nd place times (dual-split), and a countdown timer with a maximum length of 24 hours.

All of that may sound complicated, but the GMWB5000D-1 is a cinch to operate from its four side-mounted buttons, all of which are labeled clearly on the watch face itself. If you remember the 1980s and owned a Casio then, you’ll recall how intuitive these buttons are, but G-SHOCK has gone further by providing a quick tone-on/off toggle, which makes shutting off an embarrassing alarm super easy (during wedding vows, anyone?).

When connected to your smartphone, the Casio G-SHOCK Connected app will provide all the mod-cons, but if you can’t be bothered with that, or see the GMWB5000D-1 as a panacea to the constant contact of your smartphone, it’ll operate just like a vintage digital G-SHOCK… only better.

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