L
Lever escapement - part of the workings of a watch - this component provides the classic ticking sound of the watch. The lever escapement is an elementary component of the watch movement. It is also called "detached" escapement, since the escapement oscillates freely after leaving the pallet fork.
Link -Links compose the individual parts of a stainless steel watch bracelet. Depending on how many links are next to each other, one speaks, for example, of a three-link or four-link bracelet.
Lug - The lug of a watch connects the case with the bracelet.
Luminous - luminous (lume) markers and hands are made by applying glow in the dark coating to the indicator. This allows them to illuminate automatically in dim light.
Longines - Swiss Watch manufacturer from the 1800s. The Longines' famous logo of a winged hourglass is the oldest trademark (it's from 1867) registered with the WIPO {now the United International Bureaux for the Protection of Intellectual Property} still in use today. The company not only make fine timepieces, but have strong ties throughout the history of sports timekeeping.
M
Milanese bracelet - The Milanese bracelet is a metal bracelet made of numerous small interwoven loops and is very comfortable to wear due to its high flexibility.
Mainspring - The mainspring is tightened by turning the winding crown and drives the movement by means of kinetic energy. It sits in the barrel and can keep the watch running for a few days (depending on brand and model) until it needs to be wound again.
Minute repeater - This is a form of repeater that strikes the hours, quarter hours and minutes in different pitches.
Moon phase - This complication indicates in which phase the moon currently is.
Movement -The movement, or calibre, is the entire mechanism inside a watch that drives it.
N
Nivaflex - Nivaflex is an alloy consisting of cobalt, nickel, chromium, molybdenum, tungsten, iron, titanium and beryllium, which is often used for manufacturing mainsprings. It is harder and more resilient than the carbon steel which was previously used for mainsprings.
NOMOS Glashütte - A German watch making company, creating sleek 'flat' modern timepieces.