Watch Glossary — Essential Watch & Watch Band Terms
Your comprehensive reference for watch terminology, from movements to materials. Navigate quickly with our A-Z index to find the terms you need.
A
Alarm
A watch complication that produces an audible sound at a predetermined time, allowing the wearer to set reminders or wake-up alerts.
Automatic (Self-Winding)
A mechanical watch that winds itself through wrist movement via a rotating weight called a rotor. This eliminates the need for manual winding in most cases.
B
Bezel
The outer ring around a watch face, which can be fixed decorative element or rotating functional component used for timing activities or calculating elapsed time.
Bracelet
A metal watch band typically made from stainless steel, gold, or other metals, characterized by linked segments that create a flexible wrist attachment. Shop metal bracelets →
Bund Strap
A distinctive German-style leather watch strap featuring a wide leather cuff that extends past the lugs, originally designed for military aviators to prevent skin burns from hot metal watch cases. Shop Bund straps → | Complete Bund strap guide →
Butterfly Clasp (Deployment Buckle)
A folding clasp mechanism that opens like butterfly wings, allowing the watch band to unfold completely for easy removal while maintaining the band's original length and shape. Learn to replace clasps →
C
Chronograph
A watch complication that functions as a stopwatch, featuring additional hands and sub-dials to measure elapsed time intervals with precision.
Curved End (Fitted End)
Watch band ends that are shaped to perfectly match the contours of specific watch case lugs, providing a seamless appearance and secure fit. Shop curved end bands →
D
Deployment Clasp
A sophisticated closing mechanism for watch bands that opens by pressing buttons or levers, allowing the band to unfold completely while maintaining its fit and prolonging band life. Also known as a butterfly clasp. Watch fastener guide →
Drilled Lugs
Lugs with holes drilled completely through them, making spring bar installation and removal easier by providing direct access without needing to compress the spring bar from the side.
G
GMT
Greenwich Mean Time function allowing simultaneous display of two time zones, typically featuring a 24-hour hand and rotating 24-hour bezel for tracking home and local time.
J
Jubilee Bracelet
A five-link metal bracelet design originally created by Rolex, characterized by its distinctive pattern of alternating center and outer links that creates a flexible, comfortable fit. Shop Jubilee bands →
K
Keeper (Loop)
Small loops on a watch strap that hold the loose end of the band in place after buckling, preventing it from flapping around the wrist. Keeper replacement guide →
L
Leather Strap
Classic watch bands made from various leather types including calfskin, alligator, crocodile, and ostrich, offering comfort and traditional style. Shop leather straps → | Complete leather band guide →
Lug Width
The measurement between the inside edges of a watch's lugs, determining the width of strap or bracelet required. Common sizes include 16mm, 18mm, 20mm, 22mm, and 24mm. Shop 20mm bands → | Shop 22mm bands →
M
Mesh Bracelet (Milanese)
A flexible metal bracelet made from interwoven steel mesh, originating in Milan. Known for its smooth texture, adjustability, and distinctive appearance.
N
NATO Strap
A one-piece nylon strap that passes under the watch case and through both spring bars, providing extra security. Originally military-issued, now popular for its durability and style variety. Shop NATO straps → | Complete NATO guide →
Nylon Strap
Lightweight, durable, and water-resistant watch bands made from woven or ballistic nylon, popular for sports and casual wear. Shop nylon straps →
Q
Quick Release
A spring bar mechanism with tabs or levers that allow tool-free removal and installation of watch bands, making strap changes quick and easy. Shop quick release bands → | Quick release guide →
R
Rubber Strap
Water-resistant, durable watch bands made from natural or synthetic rubber, ideal for sports and diving watches due to their comfort and resistance to elements. Shop rubber straps → | Complete rubber band guide →
S
Silicone Strap
Flexible, hypoallergenic watch bands made from silicone material, offering comfort, durability, and water resistance, popular for sports and smartwatch applications. Shop silicone straps →
Spring Bar
A small cylindrical pin with spring-loaded ends that attach a watch strap or bracelet to the watch case lugs. Essential hardware for strap changes. Watch tools guide →
Stainless Steel
A corrosion-resistant alloy commonly used for watch cases and bracelets, prized for its durability, hypoallergenic properties, and polished appearance. Shop steel bands →
T
Tang Buckle
A traditional watch strap fastening consisting of a metal pin (tang) that passes through holes in the strap, similar to a belt buckle mechanism.
Taper
The gradual reduction in width of a watch band from the lugs to the buckle, creating a refined appearance and improved comfort. Common taper ratios include 20mm to 18mm or 22mm to 20mm.
W
Water Resistance
A watch's ability to resist water intrusion, measured in meters, ATM, or bar. Common ratings include 30m (splash resistant), 100m (swimming), and 200m+ (diving).
Z
Zulu Strap
A robust one-piece nylon strap similar to NATO but with heavier-duty hardware and construction, originally designed for military use and favored for its extreme durability.