Watch Glossary

Component that engages escape wheel teeth to control gear train release

Jewel on pallet fork engaging escape wheel teeth for impulse transmission

Rolex's blue alloy hairspring resisting temperature changes and magnetic fields effectively.

Rolex innovation, paramagnetic alloy, temperature resistant, used in 3135 and 3235

Alloys resistant to magnetism, Parachrom hairspring in Rolex, alloy balance wheels

Golden Ellipse exclusive, hand-wound, ultra-thin, 48-hour reserve, haute horlogerie standard

Rolex's automatic winding mechanism using a free-spinning rotor

Small gear with fewer teeth, typically fixed to wheel shaft for gear meshing

Thin shaft extending from watch gears that rotates in jeweled bearings to reduce friction.

Base structural component of the movement holding bridges, jewels, and gear pivots in place.

Fine-tuning of movement rate to account for accuracy differences in various wearing positions.

Duration the watch continues running after being fully wound without additional energy input.

Smartwatch operating system architecture managing app alerts and message delivery