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Discovery Classic
The Discovery’s distinct crescent window displays GMT time, while the hands show your local time, making it effortless to read both at a glance. No oversized dials or cluttered displays—just a slim, stylish design that gives pilots and travelers instant clarity across time zones.
Strap Options
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Brown
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Green
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Water Resistant 100m
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PVD Coated 316L Stainless Steel
Specifications
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F e a t u r e s
x1 grade Super-LumiNova®
X1 Grade Super-LumiNova® is the highest-performance luminous material available, engineered to deliver brighter, longer-lasting afterglow than standard Super-LumiNova. Compared to lower grades and other lume options, X1 maintains visibility deep into the night, retaining up to 60% more brightness after extended hours in darkness. It’s the benchmark choice for premium timepieces where legibility and reliability matter most. This lume comes standard on all Call Sign timepieces.

Its Your time
Call Sign is built for everyday life—stylish enough for work or a night out, yet durable and practical for travel and adventure. It’s a watch that feels personal, with details that connect to your story and remind you of where you’ve been. More than just keeping time, it’s made to be worn, enjoyed, and lived in.