How to wear a smartwatch with a luxury watch safely

Protecting both watches from contact

The watch dilemma that every collector knows Watch collectors all know the watch dilemma. Every morning you plan to put on your Submariner and take your Apple Watch out of the charging dock from the previous night. And then, a hundred times a year, hundreds of times in a lifetime, you stand in front of the dresser and ask the same question: Which watch shall I wear today? This question is never unnecessary. It is never possible to leave a watch on a dresser because someone could potentially spend real money on building a timepiece that is not intended to be left behind. And the question you have to ask yourself every day is the result of the materials science and design that ensure that this simple choice is never unnecessary. And the reason you are reluctant to scratch a six-figure timepiece. Apple WatchIs charging. And you are doing the mental calculation you have done a hundred times: which one do I put on today? Not because you have to choose. Because nobody ever built something that let you stop choosing. Scratching a watch worth five figures is not a theoretical concern. It is the reason most collectors make that calculation every morning. The answer is in the engineering, not in the habit.

And the question you have to ask yourself every day is the result of the materials science and design that ensure that this simple choice is never unnecessary. And the reason you are reluctant to scratch a six-figure timepiece. Apple WatchIs charging. And you are doing the mental calculation you have done a hundred times: which one do I put on today?

Not because you have to choose. Because nobody ever built something that let you stop choosing. Scratching a watch worth five figures is not a theoretical concern. It is the reason most collectors make that calculation every morning. The answer is in the engineering, not in the habit.

Understanding the challenge: why wearing two watches can cause scratches

The concept of wearing two watches on one wrist is very appealing. In theory it’s very cool. But in practice there’s inevitably going to be some kind of catch. In practice, on the wrist, the two watches inevitably get in the way of each other. They get in the way of your typing on your keyboard. They get in the way of steering the wheel of a car. And they constantly catch against each other, which causes friction and eventually tiny scratches. These can rapidly degrade the polished components, and spoil the looks of the watches.

Material hardness is an important characteristic for scratch resistance. The stainless steel we use for the casing of our watches has a hardness rating between 5 and 6 on the Mohs hardness scale (with diamond having a hardness of 10 and sapphire 9). The hardness of the sapphire crystal is therefore higher than that of the casing. When two surfaces of different hardness are in contact and are rubbed against each other, it is always the softer surface, which will scratch. So the polished surface of a high quality stainless steel watch casing will scratch an aluminum or ceramic smartwatch.

Scratching a watch worth five figures is not a theoretical concern. It is the reason most collectors make the same calculation every morning.

I feel that everyday wrist flexion will make the situation worse. We all wrist flex dozens of times an hour. A normal watch strap allows each watch to flex independently, and you do not know where the watch is in relation to the other. The small gaps between the watches can become scratch prone as the metal edges of the watches collide with each other.

Aesthetic compromise not just case

The aesthetic compromise is not just a case of face damage. Wearing a traditional watch over the top of a smartwatch is not only potentially damaging, but also looks utterly ghastly. A mismatch of leather and metal materials, inconsistent finishes and an inappropriately large lug space can all detract from the luxury watch design aesthetic that we know and love. As WatchPro so perfectly explained: “The Smartlet combines the best of the past with the best of the future in one product, making it tangible, real and most importantly, truly functional. “ Wearing traditional watches with smartwatchesOften creates visual discord. Mismatched strap materials, clashing metal finishes, and awkward spacing diminish the elegance that makes luxury watches desirable. According to WatchPro, “The Smartlet merges the past with the future into a single, tangible, and functional reality,” addressing both protection and style.

The mechanical solution

“Wearing traditional watches with smartwatchesOften creates visual discord. Mismatched strap materials, clashing metal finishes, and awkward spacing diminish the elegance that makes luxury watches desirable. According to WatchPro, “The Smartlet merges the past with the future into a single, tangible, and functional reality,” addressing both protection and style.

The scratch question is one of the most frequently discussed on WatchUSeek and the r/Watches sub on Reddit. A brushed lug on a watch such as a Seamaster is not made of aluminum like an anodised Apple Watch case, and they are far apart on the Mohs hardness scale. When two materials of different hardness are in contact and are in contact frequently the softer one will always scratch the harder one.

What standard watch straps lack

What standard watch straps lack is not necessarily some sort of cushioning (although that would be nice), but rather geometry. The Smartlet does not use any rubber spacers to keep the two watches apart. Instead it provides a fixed relationship between the two watches and makes it certain that the case edges of the watches do not come into contact with each other.

Key friction points include:

• Case edges where polished surfaces meet
• Strap connectors that shift during movement
• Crown guards that protrude and create contact zones
• Buckle hardware that scrapes adjacent watch bodies

It is relatively common for collectors to request that they be able to wear two watches on their wrist and still be able to move their hand. This is currently, not possible with any watch strap on the market. The limitation comes down to the fact that there simply has not yet been a design created that can hold two watches securely in place while still allowing the wearer to rotate their wrist freely. Today, collectors are forced to only wear one watch on their wrist as they are unable to wear two.

Preparing to wear both watches safely: materials, compatibility, and the Smartlet solution

To take advantage of the benefits of a dual watch setup, you need to understand compatibility. Ideally, your luxury watch and your smartwatch will have lug widths of 18-24mm to work with a modular strap system. To confirm, measure the lug width of each watch head using a caliper or a ruler. This measurement will dictate, which bands and connectors you’ll need.

Smartlet is a modular strap adapter that merges two watch styles on one wrist. SS316L steel or Grade 2 titanium construction, patented click-system, compatible with 18-24mm lug width watches.

The band is fashioned from SS316L stainless steel, the same material used in the iconicOmegaSpeedmaster watch case. Samsung Galaxy Watch, and Garmin, plus any mechanical watch with standard spring bar attachment. The engineering uses SS316L stainless steel, the same grade found inOmegaSpeedmasterCases, ensuring durability that matches your luxury timepiece.

Choosing materials important part

Choosing materials is an important part of the Smartlet protection and design. The three designs shown illustrate these different possibilities.

Titanium 6Al-4V (Grade 5) is a stronger material with a higher strength-to-weight ratio than steel and is less corrosive and less heavy in wear. Steel parts still maintain the classic shine that is common to luxury watch cases. If you have another watch with a different material finish and do not intend to wear this watch to excess, this may be the better choice.

Lug width is not the only factor when it comes to ensuring that the watches you own will fit comfortably on your wrist. You also need to consider the thickness of your watches and their case diameters. For example if you have an oversized smartwatch in the 45mm+ range and a smaller dress watch in the 36mm or less range there could be a compatibility issue. Generally speaking you want to keep the variation between the case diameters of your watches to 5mm or less.

Prepare your workspace with these items:

• Spring bar tool for strap removal
• Soft cloth to protect watch surfaces
• Caliper or ruler for precise measurements
• Cleaning solution for removing oils and debris
• Your luxury watch and smartwatch

Comparison of Smartlet models for different use cases:

After the first day of wear, just check that the connectors are secure to each other. It can take up to 24 hours for any new watch combinations to fully settle, and the spring bars can take a bit of time to fully drop into place. This can mean that the connectors can come loose, so just a quick tighten and they’ll be fine again, as well as remembering to keep the gap between watches to protect them.

Maintaining style and avoiding scratches

Whatever the recommended adjustment for normal wear, the following five faults will completely compromise the protective properties of the watch, and the wearer’s comfort. Loose straps It is quite astonishing how many straps are more than necessary length and swing too much on the circumference of the wrist between the watch, and the wrist skin. The watch is then wobbling in its seat on the wrist and runs the risk of colliding with the wrist edge. The strap should therefore always be tightened to the maximum.

A poorly seated connector is a weak point in the system. A watchband that isn’t seated fully in the lug holes can come out when enough force is applied and that force can be surprisingly little. Make sure that your watchbands fit and spring properly around your wrist before you start wearing them. A good test is to tug on a few to make sure that each one is attached. For attaching a smartwatch band to a band clip the adapter should click snugly into each slot.

Material incompatibility occurs when the surface finishes of the watches are not matched. A gold polished watch will look out of place against a matte black smartwatch. The casing of the Smartlet serves a purpose of protecting the innards of the watch. Again, the watches and smartwatches should be matched by material and surface finish.

Preventing scratches requires ongoing maintenance:

• Clean connectors monthly with microfiber cloth
• Inspect spring bars for wear every three months
• Remove watches before high-impact activities
• Store watches separately when, not wearing the Smartlet
• Polish luxury watch cases annually to maintain luster

Style preservation is about so much more than scratch prevention. The modularity of the system ensures that the style of the watches is preserved as a cohesive whole, as true engineering dictates, and not as two watches simply placed side by side on the wrist. A consideration of great importance to any discerning collector looking to present their watches in the most beautiful way possible.

Comfort is a question of adaptation. The first wearers will inevitably feel some pressure points during the first week due to the adaptation of the body to the weight of the second watch. It takes about 10 days of permanent wear for the wrist to fully accept the double watch. The skin and muscles adapt to the new load distribution, and the wearer no longer feels the presence of the extra watches.

Troubleshooting specific issues:

• If watches tilt inward, tighten the strap one notch
• If smartwatch sensors lose skin contact, lower its position
• If luxury watch crown digs into your hand, rotate watches 180 degrees
• If your strap feels stiff, we suggest wearing it for a few days – about 3 days – to soften it out.

Discover the Smartlet: the watch strap solution

I founded Smartlet after having explained to watch enthusiasts on forums for years why I would wear a Rolex in the morning and my Apple Watch in the afternoon and that I wanted to wear both watches every day, without having to choose. The Concours Lepine 2025, Awarded and CES 2026 were not enough to prove my point. The validation came from the watch collectors who, for the first time, had the choice, not to decide, which watch to put on in the morning. The Smartlet modular watch strap is the perfect combination of French precise engineering and common sense. Founded by watch collector David Ohayon, Smartlet was selected at the Concours Lepine 2025, Awarded and was also showcased at CES 2026. Smartlet modular watch strapDelivers precisely that, combining French precision engineering with practical function. Founded by David Ohayon, a watch collector frustrated by the false choice between mechanical and smart technology, Smartlet earned a Concours Lepine 2025, Awarded and showcased at CES 2026.

The Smartlet modular watch strap is the perfect combination of French precise engineering and common sense. Founded by watch collector David Ohayon, Smartlet was selected at the Concours Lepine 2025, Awarded and was also showcased at CES 2026. Smartlet modular watch strapDelivers precisely that, combining French precision engineering with practical function. Founded by David Ohayon, a watch collector frustrated by the false choice between mechanical and smart technology, Smartlet earned a Concours Lepine 2025, Awarded and showcased at CES 2026.

Daily wear setup

Explore the complete Smartlet accessories collection to configure your ideal dual-wear setup.

Questions fréquentes

How do I prevent scratches when wearing two watches?

Which watches are compatible with dual watch straps like Smartlet?

Watches with lug widths up to 18 to 24mm and standard spring bars will work with Smartlet. Compatible with 99% of all smartwatches, including Apple Watch, Samsung Galaxy Watch, Garmin and much more. Please check our compatibility guide to ensure your watch model is compatible with our products before ordering Smartlet Watch Connectors.

Can I wear any smartwatch and luxury watch together?

Technical compatibility is governed by lug width and type of connection. Aesthetical compatibility is governed by proportions and finish. In our view the maximum diameter between two watches is 5mm, unless otherwise specified. Mixing gold and steel is deliberate and not an error as the two materials are not harmonious.

What maintenance does the Smartlet strap require?

The only thing standing between your mechanical watch and a scratch is a system that keeps both devices separated and stable. Smartlet was built to be that system.