A watch doesn't ask for much. A wipe now and then, a clean strap, a dry place to sit overnight — that is most of it. But the small things you keep in a drawer make the difference between a watch that looks tired after two years and one that still reads as new after ten. A basic care kit is not a workshop. It is a modest handful of items, most of them inexpensive, that let you handle the routine jobs yourself and recognise the moment when a job should go to a watchmaker instead. Here is what is worth having, roughly in the order you will reach for it.

Cloths: buy three, label them

Most scratches on a watch are not caused by the world. They are caused by the cloth you used to wipe it. A cloth that has picked up a grain of grit becomes a very fine file, and if you use the same one on the case and the crystal, you spread that grit everywhere.

Start with two microfiber cloths of decent weight — the kind sold for camera lenses and eyeglasses, not the thin ones from a supermarket multipack. Dedicate one to the crystal and dial side, and the other to cases, bracelets and casebacks. Add a third, softer cloth, either well-worn cotton or a lint-free microfibre, for drying after any damp cleaning. Keep each in its own small pouch or zip bag so they don't collect dust between uses.

Wash them occasionally in plain warm water with a little mild soap, rinse thoroughly, and let them air dry. Skip fabric softener entirely; it leaves a residue that smears across sapphire and does nothing useful for metal.

What not to use: paper towels and tissues, which are made of wood fibre and will leave fine marks on polished surfaces, and any cloth that has already been used with household cleaner.

Brushes: soft is the whole point

You need one brush, maybe two, and both should be gentler than you expect.

• An extra-soft toothbrush, ideally a child's size, for bracelets, clasps and the back of the case. Bristles should feel almost floppy against your fingertip.
• A fine detailing brush — the sort sold for cleaning camera bodies or between keyboard keys — for the crevices around lugs, the crown and the edges of the caseback.
• A rubber blower bulb, the photographer's kind, for puffing dust out of gaps before you touch anything. This is the tool that prevents most of the damage a brush could do.

Never use a stiff brush, a brass-bristled brush or an old toothbrush that has already done time on your teeth. And never brush the dial side of an open watch, or anywhere near the crown when it is pulled out. After each use, rinse the bristles, shake them out and let them dry bristles-down so water doesn't sit in the handle.

Storage: the part almost everyone skips

A watch left on a windowsill will fade. A watch kept in the bathroom will quietly corrode. Those two sentences cover most storage mistakes.

Give each watch a soft-lined slot in a box, or its own pouch if you prefer to keep them separately. Keep the box out of direct sunlight and away from radiators, and out of rooms where steam lives. A small silica gel sachet in the box is cheap insurance against humidity; swap it every few months, or dry it out in a warm (not hot) place.

Leather straps need air. Don't seal a leather-strapped watch in a plastic bag, and don't fold the strap back on itself for months at a time — rest it loosely around a curved cushion so it keeps its shape. Metal bracelets are less fussy, but store them closed so the clasp doesn't rattle against neighbouring cases.

If a quartz watch is going into long storage, ask a watchmaker to remove the battery first. A leaked cell does far more damage than the cost of the visit.

The small tools worth owning

This is where a kit stops being cleaning supplies and starts being useful.

• A spring bar tool with a forked end and a pin end. This is the single most useful item in the drawer if you like changing straps.
• A precision screwdriver set with flat blades in the small sizes used on watch cases, plus a Phillips or two for clasps.
• Non-magnetic tweezers, ideally brass or plastic-tipped, for picking up spring bars and screws without magnetising anything.
• A 10x loupe, so you can actually see whether that mark is dirt or a scratch, and whether a gasket looks perished.
• A shallow tray or lint-free mat to work over, plus a small lidded pot for screws. Screws that fall on a carpet are gone forever.

Work over the tray, not over the sink, and not over a tiled floor. Lay parts out in the order you removed them. If a caseback needs a proper wrench, or the watch is vintage, water-resistant or still under warranty, put the tools down — opening a case can compromise the seal, and a watchmaker will pressure-test it afterwards as a matter of course. That is a sensible rule even for experienced hobbyists.

A ten-minute routine you will actually keep

1. Wipe the crystal and case with a clean microfiber cloth before the watch goes back in the box. Ten seconds, every day.
2. Once a week, brush the bracelet or strap dry with the soft toothbrush to lift dust out of the links.
3. Once a month, clean a metal bracelet with a damp brush, a drop of mild soap and warm water, then rinse with a barely damp cloth and dry thoroughly before reassembling.
4. Check the strap: stitching on leather, cracks at the bend points on rubber, looseness at the spring bars. Replace a strap before it fails, not after.
5. Look at the caseback and crown area every few months. Grit collects there, and that is where seals begin to suffer.

Material matters more than method

Leather should never be soaked — wipe it, let it dry away from heat, and treat it sparingly with a leather conditioner once or twice a year. Rubber and silicone handle soap and water without complaint. Gold plating and polished finishes reward gentleness and punish enthusiasm, so use the softest brush you own and skip anything abrasive.

What to leave out of the kit

Some products cause more problems than they solve. Polishing compounds remove metal, and on a plated or brushed case they will leave a patch you cannot undo; leave polishing to someone with a lathe and a practised hand. Toothpaste and baking soda are abrasives, whatever the internet says. Canned compressed air can spit propellant and drive grit further into the case. Household glass cleaner is fine on a mirror and unnecessary on a watch. Ultrasonic cleaners are best reserved for a detached metal bracelet, never for a complete watch head or anything vintage.

Building the kit in stages

Buy in three passes and you'll never waste money on something you don't use. First pass: two microfiber cloths, a soft brush and a pouch for storage. That covers daily care and costs very little. Second pass: a spring bar tool, a blower and a loupe, once you find yourself wanting to change straps or inspect a mark. Third pass: screwdrivers, tweezers, a tray and a silica sachet, when you're ready to handle small jobs with patience rather than hope.

Keep the whole lot in one small tin or box, in a drawer that isn't the bathroom. The best care kit is not the most complete one — it's the one that lives where you can reach it in ten seconds, so that the wipe and the brush become habit rather than a project. And keep one number saved: a good local watchmaker. Half of caring for a watch is knowing which half not to do yourself.

Photo: Felix-Mittermeier / Pixabay