Watch descriptions carry a lot of shorthand. Subdial, tachymeter, applied index, day-date — all of it assumes you already know. This is a plain reading of what is on a dial and what those words mean when you meet them on a product page.
The basic furniture
The dial is the face. The hands point at the time. The indices or markers are whatever sits at the hours — printed Arabic numerals, Roman numerals, batons, or small dots.
A marker is printed if it is inked flat onto the dial and applied if it is a separate metal piece fixed to the surface. Applied markers catch the light and give a dial depth; printed markers usually read more cleanly. Neither is better, they are different intentions.
Some dials have a minute track around the outside, a ring of small divisions marking each minute. It is what lets you read the time precisely rather than approximately, and its presence or absence changes the character of a dial more than people expect.
Hands
Hand shapes have names, and they show up in descriptions. Baton hands are plain straight bars. Dauphine hands are tapered and faceted, and read as formal. Sword hands are broad and pointed. Cathedral hands have a pierced, ornate shape, common on field watches. Skeleton hands are outlines with the middle cut away, so the dial shows through.
The seconds hand tells you something about the movement. A hand that ticks once a second is running to a quartz beat. A hand that appears to glide is driven by a mechanical balance beating several times a second. It looks continuous but it is actually a very fast series of small steps.
Date and day windows
A date window is an aperture in the dial showing a printed disc underneath. It sits most often at three o’clock, sometimes at six. A day-date shows the weekday as well, usually side by side at three or spread across the top of the dial — you will see the pairing in models such as the Easy Reader Day Date and the Legacy Day and Date.
A cyclops is a small magnifying lens set over the date to make it easier to read. Not every watch with a date has one.
Worth knowing: most date mechanisms do not know how long a month is, so a 30-day month will need correcting on the first.
Chronograph subdials
A chronograph is a stopwatch built into a watch. It is the largest single group in our catalogue after the collaborations, with 60 watches in the Chronograph collection, and it is the layout that confuses people most, because a chronograph dial has two sets of hands doing two unrelated jobs.
The main hour and minute hands tell the time as normal. The large centre seconds hand, which sits still until you start it, is the stopwatch seconds. The small subdials — the little dials set into the face, also called registers — accumulate the elapsed minutes and hours while the stopwatch runs.
On a common three-register layout one subdial counts elapsed minutes, one counts elapsed hours, and the third is the running seconds, a small seconds hand that simply ticks away continuously to show the watch is going. On a two-register layout the hour counter is dropped.
The pushers flanking the crown drive it: the upper one starts and stops, the lower one resets to zero. If a centre seconds hand is sitting motionless at twelve, nothing is broken — the stopwatch is simply at rest.
Scales around the edge
A tachymeter is the scale often printed on a chronograph bezel or dial edge, marked with numbers like 60, 80, 120. It converts elapsed time into a rate per hour. Time something over one measured mile or kilometre, and the tachymeter number the seconds hand lands on is your speed. You will see it named directly in models such as the Marlin Chronograph Tachymeter.
A 24-hour scale, common on field and GMT-style dials, runs from 13 to 24 inside the main hour markers so you can read the time in 24-hour format without converting.
Lume
Lume is luminous material on the hands or markers. It is photoluminescent: it absorbs light and releases it slowly in the dark, so it needs charging under a lamp or daylight and fades over the course of a night. It is not a power source and it does not run out permanently.
What we will and will not tell you
We publish the specifications we can stand behind — case diameter, case and strap material, gender sizing, and movement where the model name confirms it. Where we do not have a figure from the source, we leave it out rather than estimate. If a detail matters to your decision and it is not on the page, ask us at support@heatshabu.com.
Once the vocabulary is familiar, product pages get much faster to read. Have a look through the shop and see how much of it you can now decode at a glance.