A new strap is the cheapest way to make an old watch feel new. It can turn a dressy piece into something you can wear to the beach, or make a sports watch look sharp enough for a wedding dinner. This watch strap guide focuses on two things that matter most here: which strap materials cope with Singapore’s heat and humidity, and how to swap a strap yourself at home without scratching the case or losing a spring bar under the sofa. If you are new to watches, start with our guide to watches for beginners, and for straps you would rather have fitted professionally, see our pick of the best watch shops in Singapore.
Why Strap Choice Matters More in a Humid Climate
In a temperate country, a leather strap might last years. In Singapore, where you sweat on the walk to the MRT and step into icy air-conditioning minutes later, straps are under constant stress. Moisture and salt from sweat soak into porous materials, skin oils build up, and the strap is repeatedly heated and cooled.
The practical results are familiar to many watch owners here:
- Leather that darkens, cracks or develops a sour smell within months.
- Fabric straps that stay damp after a run and pick up odour.
- Metal bracelets that trap grime between links.
- Rubber that stays comfortable but can attract lint and dust.
None of this means you must avoid any material. It means matching the strap to how and where you wear the watch, and owning more than one if your days vary.
Comparing the Main Strap Materials
Here is how the four common strap types tend to behave in daily Singapore life. Quality varies a lot between makers, so treat this as a general picture rather than a rule.
| Strap type | Comfort in humidity | Best for | Watch out for |
|---|---|---|---|
| Leather | Fair; absorbs sweat | Office, dinners, air-conditioned days | Odour, cracking, water damage |
| Rubber / FKM | Very good; does not absorb sweat | Sport, swimming, outdoor weekends | Cheap rubber can feel sticky or attract lint |
| NATO / nylon fabric | Good; breathable but holds water | Casual wear, travel, easy washing | Stays wet after swimming; adds thickness under the case |
| Metal bracelet | Good; cool on the wrist | All-round wear, smart-casual | Needs sizing; grime between links; heavier |
Leather
For Singapore, consider leather a “cool day” or “indoor” strap. Rotating it with another strap gives it time to dry out fully between wears. Avoid wearing it while washing dishes, exercising or caught in a downpour.
Rubber and FKM
Rubber is arguably the most practical choice for the tropics. It does not soak up sweat, rinses clean under the tap and dries in seconds. Higher-grade compounds, often sold as FKM (a type of fluoroelastomer), tend to feel softer and resist dust better than basic silicone. Vented or perforated designs help air reach your skin.
NATO and Other Fabric Straps
A NATO strap is a single length of woven nylon that threads under the watch and through both spring bars, so the watch stays on your wrist even if one bar fails. It is inexpensive, comes in endless colours and can go into a laundry bag in the washing machine. The trade-offs are that it lifts the watch slightly higher on the wrist and stays damp after a swim. Single-pass or “two-piece” fabric straps reduce the bulk.
Metal Bracelets
A steel or titanium bracelet is durable and feels cool when you walk out of air-conditioning. It needs to be sized correctly by removing links, and in humidity your wrist can swell slightly during the day, so many people prefer a clasp with a micro-adjustment or a little extra room. Clean between the links occasionally with a soft toothbrush and mild soapy water if your watch is water resistant.
Measuring Your Lug Width and Picking the Right Fit
Before buying anything, you need your watch’s lug width: the gap between the two lugs (the “horns” that hold the strap). Common sizes include 18mm, 20mm and 22mm, but odd sizes exist.
To check it:
- Look up the specification from the watch maker, or check the back of the existing strap, which is sometimes stamped with the width.
- If unsure, measure the inside gap between the lugs with a ruler or calipers in millimetres.
- Note whether the strap tapers. Many straps are wider at the lugs and narrower at the buckle, which looks more elegant on smaller wrists.
Also check strap length. Straps are usually sold in short, regular and long. Wrap a piece of string around your wrist where you wear the watch, measure it, and compare it with the seller’s sizing chart. Some watches have curved end pieces or integrated designs that only accept the maker’s own straps, so check that first.
How to Change a Watch Strap at Home
Most watches attach the strap with spring bars: small spring-loaded pins that slot into holes inside the lugs. Swapping them is a simple job once you have done it a couple of times.
What You Need
- A spring bar tool (a small fork on one end, a pin on the other), widely sold online and at watch shops.
- A soft cloth or microfibre towel to work on.
- Low-tack tape, such as painter’s tape, to protect the lugs from scratches.
- Good lighting and a tray to catch tiny parts.
Step by Step
- Protect the case. Lay the watch face down on the cloth and cover the lugs with tape.
- Find the spring bar. Look between the strap and the lug for the small shoulder of the spring bar.
- Compress and release. Slide the forked end of the tool between the strap and lug, catch the shoulder, and push it towards the centre of the strap. The bar compresses and the strap end lifts free. Hold your finger over it so nothing springs away.
- Fit the new strap. Thread a spring bar through the new strap’s end. Seat one end of the bar in a lug hole, compress the other end with the tool and guide the strap into place until you hear or feel it click.
- Test it. Tug the strap gently and rotate the bar slightly to make sure both ends are fully seated. A strap that is not seated properly is the most common reason watches fall off.
Quick-Release Straps
Many modern straps come with quick-release spring bars, which have a tiny lever you pull with a fingernail. No tool needed. These are handy if you like to change straps often, for example rubber for weekday gym sessions and leather for weekend dinners.
NATO Straps
For a NATO, you leave the spring bars in place. Simply thread the long end down through the top spring bar, under the case, and out through the bottom spring bar, then fasten the buckle and tuck the tail through the keepers.
When to Leave It to a Professional
Changing a strap is low risk, but a watch shop or the maker’s service centre is the better choice when:
- The watch has screw-in bars, or the case is integrated with the bracelet.
- You need bracelet links removed without the right tools.
- The watch is valuable or sentimental and you are not confident.
Ask about the cost upfront, as it varies between shops.
Caring for Straps So They Last
A little routine care extends the life of any strap in our climate:
- Wipe leather with a dry cloth after wearing and let it air out overnight, away from direct sun.
- Rinse rubber and NATO straps in fresh water after swimming, especially in the sea or a chlorinated pool.
- Wash fabric straps occasionally in a laundry bag and let them dry fully before wearing.
- Rotate between two or three straps so none stays damp for long.
- Replace spring bars if they look bent or rusty. They are inexpensive and are what actually keeps the watch on your wrist.
With a couple of straps and a spring bar tool, a single watch can cover the office, the gym and a weekend at East Coast Park. That versatility is the real value of learning to do it yourself.
Frequently Asked Questions
How do I find my watch’s lug width before buying a strap? Look up the maker’s specification or check the back of the existing strap, which is sometimes stamped with the width. If unsure, measure the inside gap between the lugs in millimetres with a ruler or calipers.
Can I swap the strap myself without damaging the watch? Yes, it is low risk with a spring bar tool, a soft cloth and low-tack tape over the lugs. Work over a tray to catch tiny parts, and tug the new strap afterwards to confirm both ends are seated.
Is a rubber strap good for swimming and the gym? Yes, rubber does not soak up sweat, rinses clean under the tap and dries quickly, which suits sport and swimming. Higher-grade FKM tends to feel softer and resist dust better than basic silicone.
When should I take my watch to a shop instead of changing the strap? Go to a watch shop or the maker’s service centre if the watch has screw-in bars, an integrated bracelet, or needs links removed without proper tools. It is also wise for valuable or sentimental watches. Ask about the cost upfront.
How do I stop a leather strap from smelling? Wipe it with a dry cloth after wearing and let it air out overnight away from direct sun. Rotate it with another strap so it dries fully, and avoid wearing leather while exercising, washing dishes or caught in a downpour.
Further reading: Automatic vs Quartz Watches: Which Should You Buy? · Choosing a Watch Size That Suits Your Wrist