Rolex Glossary Of Watch Parts & Terminology

Case the body” of the watch. It contains the movement and is attached to the band on its extremes.

Dial the face of the watch on which the hands and hour markers are put on.

Hands the hour hand, minute hand, and second hand that keeps time.

Crown the round-shaped winder that allows one to adjust the time, day, date, and movement.

Crystal the glass that covers the dial. It comes in either a sapphire or plastic crystal.

Bezel the round, outer-ring that seals the case.

Lugs the two pointed edges that attach to the bracelet on both top and bottom ends of the case.

Bracelet or the band, is the piece that wraps around the wrist. It is usually made of stainless steel or gold.

End Piece – the small metal piece that allows the bracelet to be attached to the case.

Spring Bar a pushpin that holds the bracelet together.

Link each link” makes up the bracelet and can be removed or added to fit one’s wrist.

Aftermarket Rolex Parts non-Rolex made parts that do not display counterfeit Rolex logos or hallmarks.

Arbor the axle that a gear rides on.

Baguette ladies style watch featuring a thin rectangular or oval shape.

Balance Spring controls the swing of the balance.

Bubbleback expression used to describe the early Rolex Perpetual models, due to the thickness of the case used to house the oversized movement.

Chronograph in addition to conveying standard time, it also performs a time measuring function such as a stop watch.

Divers’ Extension a hinged extension within the watch’s bracelet, which allows the bracelet to be lengthened, to fit the divers’ wet suit.

Quick Set this feature allows the date to be rapidly set via the winding crown, without having the hour hand pass the 12 o’clock position.

Concealed Clasp the clasp buckle is concealed under the bracelet’s links, appearing to have a continuous flowing bracelet.

Hallmark a mark or stamp indicating the purity of the metal, or the date, and/or country of import.

Mainspring the principal spring of a watch that supplies the force of motion to the gear trains.

Perpetual Movement another term for an automatic or self-winding movement, this movement causes a weight inside the watch to rotate backwards and forwards, thus keeping it in constant tension.

Serial Number an identification number of a watch, usually engraved between the lugs, this number can often be used to date the production of the watch.

Sweeping Movement refers to the movement of the second hand quickly ‘ticking’ at approximately 5-8 times per second, thus giving the illusion of sweeping.

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