On the wrist

Every watch tells a story. Every strap changes it.

The Smartlet Journal covers watch strap compatibility, modular wearables, and the collector's question that started it all: mechanical watch or smartwatch? Our answer: both.

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On the wrist

Smartlet One Titanium bracelet in Grade 2 titanium

A metal bracelet for your smartwatch: what to check first

A metal bracelet is the quickest way to make a smartwatch look like a watch. What decides whether it fits and whether it lasts: the...
Does Rolex make a smartwatch? What the luxury houses tried instead - Smartlet

Does Rolex make a smartwatch? What the luxury houses tried instead

Rolex has never sold a smartwatch. TAG Heuer, Montblanc, Louis Vuitton and Hublot did build one, and Apple tried a gold Apple Watch. What those...
Rolex Submariner lug width: 21 mm today, 20 mm before 2020 - Smartlet

Rolex Submariner lug width: 21 mm today, 20 mm before 2020

The current 41 mm Rolex Submariner has a 21 mm lug width. The 40 mm models made before 2020 use 20 mm. How to tell...
What Barbie and LEGO teach us about watch straps - Smartlet

What Barbie and LEGO teach us about watch straps

Barbie, Mr. Potato Head, LEGO and the KitchenAid mixer all sell one platform and parts that keep fitting for decades. A watch can play the...
Smartlet One Classic bracelet holding a mechanical watch on top and a sensor underneath

How to wear a Whoop with a Rolex, on one wrist

The Rolex on top, the Whoop 5.0 or MG underneath, against the skin, on one Smartlet bracelet. Which Rolex fits at which lug width, which...
Can you make an analog watch smart? - Smartlet

Can you make an analog watch smart?

Not from the inside: a mechanical movement has no power for sensors. You can add the smart part next to it. Five ways to do...
Panther Eclipse: the sensor that needs no adapter - Smartlet

Panther Eclipse: the sensor with standard 18mm lugs

A screenless steel sensor with standard 18mm lugs, no subscription and a two-week battery. It takes the same 18mm watch adapter as a watch, so...
The caseback nobody looks at - Smartlet

The caseback nobody looks at

The most personal surface on a watch faces away from the world. It is also, exactly, where the sensor now sits. On engravings, skin and...
Serica 7505 and Apple Watch: the most discreet pairing there is - Smartlet

Serica 7505 and Apple Watch: the most discreet pairing there is

A 35mm field chronometer, 9.6mm thin, with 20mm curved lugs. On paper it is the most discreet watch you can stack a sensor beneath, and...
One watch gets opened, the other gets replaced - Smartlet

One watch gets opened, the other gets replaced

Every few years a watchmaker opens your watch, cleans it and gives it back. Nobody has ever serviced a smartwatch. On repair, replacement and what...
Power reserve, or the art of being left alone - Smartlet

Power reserve, or the art of being left alone

A mechanical watch is designed to survive your neglect. A smartwatch is designed to demand your attention nightly. Two opposite theories of what an object...
Cartier Tank and Apple Watch: the hardest watch to dual-wear, honestly - Smartlet

Cartier Tank and Apple Watch: the hardest watch to dual-wear, honestly

The dress watch is the hardest case for dual-wear, and the Tank is the hardest of the dress watches. Here is the honest answer, including...
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