How it works
Smartlet is built around a single principle : two semi-permanent connectors on your watches, one modular bracelet between them. Installed once, worn every day.
Two watches, together, on the same wrist.
Smartlet is a bracelet with a connector at each end. One end attaches to your mechanical watch, the other to your smartwatch The two watches sit on the same wrist, in the natural continuation of the bracelet. Like wearing them together, but engineered as one.
Both watches visible, no rotation, no swap.
Natural alignment along the wrist, like a single object.
Switch between configurations in seconds, without tools.
One bracelet, any watch.
Smartlet attaches through the standard 1.2mm lug holes used by watchmakers for over a century. The Smartlet adapters are compatible with mots common lug width. That covers brands, from Rolex to IWC, from Tudor to Panerai. Same bracelet, your entire collection.
Compatible with 100+ mechanical watch brands.
Adapted to standard lug widths from 18mm to 24mm
No modification to your watch, no scratches, fully reversible
Installed once. Worn every day.
The two Smartlet connectors install in under 10 minutes with the included watchmaker tools. Once installed, they stay on your watches. To wear Smartlet, you simply click the bracelet to both connectors. The daily gesture takes under 30 seconds, hands-free, hassle-free.
Initial installation under 10 minutes, tools included.
Benefit 2Daily wear gesture under 30 seconds, one hand.
Video guides provided for every step of the installation
Is it secure?
Smartlet protects your watches in three independent ways : the mechanism that locks, the force it withstands, and the materials that endure. Each layer answers a different question.
How the system locks.
Smartlet uses a patented dual-button pressure clasp. To close, you press both ends together until the audible click confirms the lock. To open, you must press both side buttons simultaneously. Releasing requires two hands and a deliberate gesture, impossible to trigger by accident.
Awarded at Concours Lépine 2025 for mechanism design.
Same dual-action safety principle as premium watchmaker fermoirs.
One-handed daily wear, two-handed opening only.
How much force it withstands.
Beyond the lock, Smartlet is tested against real-world stress. Each mechanism endures factory testing for pull force, repeated open-close cycles, and extreme temperature variation before leaving the workshop.
Strong pull force tolerance, factory tested.
Over 5 000+ open-close cycles without mechanism wear.
Operating range from -20°C to +60°C.
How long it stays secure.
The mechanism is only as durable as the materials around it. Smartlet is built from the same alloys watchmakers choose for dive watches and tool watches, designed to resist corrosion, oxidation, and metal fatigue over decades of daily wear.
Classic and Shadow : SS316L stainless steel, dive-watch grade.
Titanium : Grade 2 brushed satin, aerospace grade.
2 years warranty on the patented locking mechanism.
Is Smartlet worth the price?
Smartlet is not a tech accessory. It is a watchmaker object designed to be lived with, worn every day, and kept for a lifetime. Here is what justifies the investment.
Two years of horological engineering.
Smartlet is the result of two years of design, prototyping, and mechanical testing in Paris. Every iteration sharpened the locking precision, the materials sourcing, and the integration with mechanical watch lugs
Multiple prototype iterations before the final patented mechanism.
Patent filed in France and Europe, recognized at Concours Lépine 2025
Co-designed with Paris watchmaking workshops.
Manufactured to watchmaker tolerances.
Smartlet is produced in small batches by factories that serve the watch industry. Every piece is hand-finished, every tolerance is checked, every mechanism is tested individually before shipping. This is not mass production. It is watchmaker manufacturing applied to a new object.
Workshops that supply the Swiss watch industry.
Hand-finished surface treatment on every piece.
Individual quality control before shipping, no batch sampling.
One Smartlet, multiple smartwatch generations.
Smartlet is built to outlast the smartwatches it connects. The patented mechanism, the watchmaker materials, and the modular design mean your Smartlet stays with you as you upgrade your wearables and grow your collection. One investment, years of use, no obsolescence.
Modular system : add connectors and modules over time.
2-year warranty* on the patented locking mechanism
Concierge service : direct WhatsApp access to our team
Smartlet was born from a simple idea: freedom of choice. Your watch tells your story, heritage, performance, or daily tracking. With our connectors, you never compromise: integrate, adapt, expand.
Before you decide
The honest answers to the questions you might have before choosing Smartlet.
No. The Smartlet bracelet attaches through the standard 1.2mm lug holes of your mechanical watch, the same way watchmakers have been securing straps for over a century. There is no contact with the case, no modification, and no marks left behind.
Yes. The patented double-lock is secured and was tested for the last 2 years. The mechanism received the Bronze Medal at Concours Lépine 2025 specifically for its security and reliability. Once locked, Smartlet stays locked.
Yes. Smartlet is compatible with all Apple Watch sizes, from 38mm to 49mm. It works with Apple Watch Series 0 to the latest generation, and with Apple Watch Ultra. The smartwatch connector is included in every Smartlet kit and matches the finish of your bracelet.
Most likely yes. Smartlet is compatible with 100+ mechanical watch brands, including Rolex, Tudor, IWC, Omega, TAG Heuer, Panerai, Tissot, Longines, and more. The Smartlet adapters cover lug widths from 18mm to 24mm.
Under 10 minutes the first time, with the included watchmaker tools and our video guides. After installation, switching between configurations or wearing Smartlet daily takes under 30 seconds.
Smartlet is designed for daily wear, travel, professional activities, and watch enthusiast usage. For high-impact activities like running, climbing, or contact sports, we recommend wearing your smartwatch on its standard sport strap for that session.
Yes. The Smartlet bracelet can be worn with the optional Smartlet buckle, in place of the smartwatch connector. You get a premium metallic bracelet for your mechanical watch alone. Same bracelet, two ways to wear it. The optional buckle is available separately in three finishes.
Smartlet is built to outlast the smartwatches it connects. The patented mechanism, the watchmaker-grade materials, and the modular design mean your Smartlet stays with you as you upgrade your wearables and grow your watch collection. One Smartlet, multiple generations of use.
