PARTS
Dial
Leather
Engine of a watch
Movement
Mini dials
Sub Dials
Powered by light - Artificial or Natural
Eco Drive
The most scratch resistant crystal is
Sapphire
The three main materials
Leather, metal, silicone.
Type of engine
Movement Caliber
Type of Stopwatch
Chronograph
Mechanical movement
Automatic AND or Manual wind
Top of the case
Bezel
Hypoallergenic
Titanium
Synthetic ruby
A jewel
Glow in the dark
Luminous Hands
Automatic dates changes for month(s) like February
Perpetual Calendar
The case back
Dual deployment
Butterfly clasp
Powered by electricity
Quartz / Battery
Required for diving
Screw down crown
Automatic and On demand time sync
Radio Control Timekeeping
Change of operational modes
Crown
Scratch resistant quality when compared to "bare or untreated metal".
Ion Plating
5,10,20 Bar
Water Resistance
Used commonly to measure distance over time
Tachymeter
Uses GPS for on demand signal
Satellite GPS Reception Timekeeping