When choosing a watch, the primary function should be telling time—but why stop there? The world of horology offers a plethora of features, particularly for the ambitious traveler, thanks to the GMT (Greenwich Mean Time) feature. This week, we're diving into a selection of high-performance "GMT Plus" watches that not only tell the time but also offer extras ranging from alarms to diving capabilities and even stealthy designs. Let’s explore five exceptional timepieces!

1. Ball Roadmaster M Model A

The Roadmaster M Model A from Ball Watch Company is a powerhouse. It’s crafted from rugged materials and equipped with tritium micro gas tubes that illuminate like a starry night. Boasting GMT functionality alongside a 12-hour mechanical alarm, this watch features a striking multi-layer black dial with red accents and a bi-directional 24-hour bezel. Only 333 units are available, retailing at an impressive USD 6,299.

Quick Specs: Ball Roadmaster M Model A

- Case: 41mm x 15.2mm, 904L stainless steel - Water Resistance: 100m - Shock Resistance: 5,000g - Power Reserve: 80 hours - Price: USD 6,299

2. Longines Hydroconquest GMT

Meet the Longines Hydroconquest GMT, a stunning dive watch that’s perfectly travel-ready. With its bold black-and-green color scheme, this 41mm beauty is also a certified diver, featuring a 300m water-resistance and a ceramic bezel graduated for 60 minutes. Stylish and functional, it's available for EUR 2,950 with a NATO strap or EUR 3,300 with a steel bracelet.

Quick Specs: Longines Hydroconquest GMT

- Case: 41mm x 12.90mm, stainless steel - Water Resistance: 300m - Power Reserve: 72 hours - Price: EUR 2,950 (NATO strap) or EUR 3,300 (steel bracelet)

3. Parmigiani Tonda PF GMT Rattrapante Verzasca Green

Elegance meets practicality in the Parmigiani Tonda PF GMT Rattrapante. Its GMT hand can be discreetly adjusted via a hidden pusher—keeping it sophisticated and subtle. A unique feature allows the GMT hand to hide behind the local hour hand for a classic two-handed format, ideal for those who prefer an understated look. Priced at CHF 28,700, this stunning piece is crafted with a gorgeous Verzasca Green dial.

Quick Specs: Parmigiani Tonda PF GMT Rattrapante

- Case: 40mm x 10.7mm, stainless steel with platinum bezel - Power Reserve: 38 hours - Price: CHF 28,700

4. De Bethune DB25GMT Starry Varius

De Bethune elevates the art of watchmaking with the DB25GMT Starry Varius. Featuring a beautiful 18k rose gold case and a mesmerizing heat-blued titanium dial, this watch is a work of art. It includes a spherical GMT indicator and a jumping date feature, all encased in an exquisite design that exudes luxury. Pricing is available upon request—a true bespoke masterpiece.

Quick Specs: De Bethune DB25GMT Starry Varius

- Case: 42mm x 11.8mm, 18k rose gold - Water Resistance: 30m - Power Reserve: 120 hours - Price: Available upon request

5. Bremont Altitude Perpetual Calendar GMT Mono-Pusher

Bremont’s Altitude Perpetual Calendar GMT Mono-Pusher is a true marvel in titanium. With a unique case shape and a striking RAF blue dial, this limited edition of 50 pieces ingeniously packs a perpetual calendar alongside a GMT function displayed boldly at noon. It’s a remarkable blend of technical accomplishment and aesthetic beauty, retailing for GBP 29,800.

Quick Specs: Bremont Altitude Perpetual Calendar GMT Mono-Pusher

- Case: Unique Trip Tick design in grade 2 titanium - Power Reserve: Not specified - Price: GBP 29,800

Each of these watches demonstrates that telling time can be about so much more. Whether for adventure, style, or functionality, these GMT Plus watches are truly exceptional investments for the discerning collector.