Watch Glossary
1356 horological terms explained
Iridescent substance from oyster and abalone shells used on premium watch dials
Reference number assigned to military watch procurement contracts in NATO inventory system.
System indexing military timepieces by function, issuing nation, and technical specifications for logistics.
NATO Reference Number (NRN) cataloging system for military equipment including issued wristwatches.
Engraved NATO identification number on military watch case or bracelet connector bar.
International cataloging system assigning unique identification codes to military watches.
Nylon fabric strap with metal hardware, durable alternative to traditional bracelets
Universal lug width specification (typically 20mm) allowing rapid strap interchange in field conditions.
Standardized fabric strap format adopted by NATO military forces for field watches.
Case lug design allowing rapid field replacement of watch band using standard NATO strap system.
Patek Philippe's prestigious integrated bracelet sports watch since 1976
Breitling's pilot chronograph with slide rule bezel since 1952
Near-field communication chip enabling contactless payments and data exchange
Near-field communication module enabling contactless transactions directly from watch face
Electroplating nickel onto watch components for corrosion protection and silver-like finish.
Intoxicating effect of nitrogen at depth; diver watches help track time/depth.
Rolex's modern shock absorber protecting the balance wheel from impacts and vibrations.
Maximum time underwater at specific depth without mandatory decompression stop.
Modern luminous compounds like Super-LumiNova that glow without radioactive elements
New Old Stock - unworn vintage watch still in original packaging from factory
Velvet-like leather surface, refined appearance, more durable than suede
Limited edition watch with individual sequential number engraved, indicates exact production count
Pinned watch worn on medical uniforms, typically featuring large numerals and clean dial design.
Synthetic fabric strap, affordable, water-resistant, available in many colors