Long-term watch storage comes down to three things at once: a stable climate, a calm position free of knocks and magnetic fields, and a secure, dry location. Keep relative humidity between roughly 40 and 55 percent, store automatic watches with a little reserve energy, and inspect the collection at regular intervals — do that and movements, gaskets and straps stay in top form for years.
A watch left untouched for months or years does not age "on its own" — it ages because of its environment. Humidity, temperature swings, hardened lubricants and crushed leather straps are the real adversaries when you are storing watches you don't wear.
When you store unworn watches, automatic and manual movements eventually stop — which is harmless and fully reversible. The lubricants are the subtler concern: over many years, oils can congeal or migrate, so a watch may run inaccurately after a long rest until it settles back in.
Quartz movements deserve special care. A battery left in place can discharge and leak, damaging the movement. For very long storage it is often worth having the battery removed beforehand.
Climate is the single most important factor in good watch storage. Consistency matters more than perfection: sharp swings cause moisture to condense and draw water into the case — even on water-resistant models, whose gaskets harden over the years.
A relative humidity of 40 to 55 percent at a stable room temperature is the target band. We cover the details in our guide to humidity and watch storage. If you want to regulate those values permanently, consider a climate-controlled watch safe.
For long-term storage, the safest choice is to keep automatic watches lying flat in a cushioned compartment, shielded from dust and light. A watch winder keeps a piece ready to wear and gently in motion — useful for complications such as a perpetual calendar that are tedious to reset, but not essential for every watch.
"Long-term storage isn't standstill — it's controlled rest."
Keep watches away from speakers, tablets and magnetic clasps. Magnetism is one of the most common causes of sudden timekeeping loss after a long rest; you'll find more context in our guide to protecting watches from UV light and dust.
Before a watch goes into its compartment for an extended period, a short, systematic preparation prevents most of the damage before it starts.
Even the best storage doesn't replace an occasional visual check. Inspect stored watches roughly every three to six months for moisture under the crystal, corrosion on the spring bars, and the state of the straps.
| Watch type | Recommended storage | Check interval | Key point |
|---|---|---|---|
| Automatic | Flat or on a winder | 3–6 months | Wind briefly before storing |
| Manual wind | Flat, mainspring relaxed | 6 months | Store unwound |
| Quartz | Flat, cool | 6–12 months | Remove battery if needed |
| Vintage | Stable, dark, dry | 3 months | Most sensitive to moisture |
The ideal location combines a stable climate with protection against theft, water and fire. A certified watch safe beats any drawer: it holds humidity steady, shields against light and dust, and is tested for burglary resistance under EN 1143-1.
At Kronberg Collection we build bespoke safes with leather- or Alcantara-lined compartments that let watches rest cushioned and dust-free — from compact models to the Grand Cabinet. To find the size that suits your collection, use our configurator, and for personal advice reach us via our contact page. Our Standard Safe range starts at CHF 12'900 and scales with the collection.
Store it flat in a cushioned, dust-free compartment at 40 to 55 percent humidity; a watch winder is optional and most useful for watches with complications that are hard to reset.
The standstill itself does no harm, since the movement can be wound again at any time; the real risks over the years are congealed lubricants and, above all, leaking quartz batteries, which is why they should be removed for very long storage.
A constant relative humidity between 40 and 55 percent at a stable temperature is ideal, because sharp swings form condensation that can penetrate even water-resistant cases with aged gaskets.
Inspect stored watches every three to six months for moisture, corrosion and strap condition; vintage pieces are more sensitive and are better checked roughly every three months.
A watch safe tested to EN 1143-1 is the best solution because it keeps the climate stable and protects against light, dust, theft and water; Kronberg models start at CHF 12,900 and can be fitted with cushioned compartments to suit your collection.
Book a no-obligation personal consultation with a Kronberg advisor. We'll guide you through every option.
