This Tiny Sensor Lets You Wear Your Favourite Watch Again

By Elliot Nash - News

Updated: 1 April, 2026

Readtime: 5 min

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Let’s you wear your favourite watch again
Adds tracking without changing how it looks
Subtle vibrations replace on-screen notifications
Not a full smartwatch, and doesn’t try to be
USD$149 pre-order, shipping Spring 2026

For anyone who actually likes watches, smartwatches have always come with a trade-off. You either wear the watch you want and give up things like tracking and notifications, or you wear a smartwatch and get all the data, just not the design.

The Heir is trying to close that gap. It’s a small sensor that sticks to the back of your watch and adds the basics, like step tracking, activity, and subtle notifications, without changing how it looks.

It’s a strong idea, but the real question is how well it actually holds up.

Ganance the heir smartwatch 5 — Image: Ganance

What The Heir Actually Does

It’s designed to be invisible. You attach it once, pair it to your phone, and The Heir tracks what you’re doing. Steps, calories, distance. The basics most people check, all syncing through the Ganance app and into Apple Health or Health Connect.

There’s no screen, no need to change how your watch looks. It just sends the data to your phone and gets out of the way.

Incoming calls and texts come through as subtle vibrations, and a couple of tap gestures let you pause or skip music without reaching into your pocket. You’re still connected. It just doesn’t look like it.

Ganance the heir smartwatch 3 — Image: Ganance

What It Leaves Out

The tradeoffs are pretty clear once you start comparing it to a fully-fledged smartwatch.

There’s no heart rate tracking, which is still a core feature for most fitness-focused wearables. And without your phone nearby, it loses connection, which means you’re back to a regular watch until your phone is back in your pocket.

Battery life sits at around 42 hours, which means charging it every day or two. That’s normal for a smartwatch, but slightly more noticeable here, mainly because everything else about it is designed to disappear.

It also won’t be a perfect fit for every watch. Flat or slightly curved casebacks work best, while heavily engraved or textured designs might struggle to hold the suction. So that wedding watch with the message on the back might not stick. Though if your watch is sitting a little loose around the wrist, the extra 3mm of thickness might help.

But tradeoffs don’t necessarily mean bad. If you’re choosing to wear a mechanical or analogue watch in the first place, you’ve already decided that not everything needs to live on your wrist. The Heir just fills in the gap without trying to take over.

Ganance the heir smartwatch 7 — Image: Ganance

Ganance the heir smartwatch 6 — The HeirBand | Image: Ganance

How It Fits Into Your Day

The Heir doesn’t ask much of its users. You stick it on the back of your watch, pair it once, and that’s pretty much it. It tracks in the background, sends haptic feedback for notifications, and picks up simple tap gestures. But for the most part, it’s out of the way.

And that’s what we love so much about this idea. You’re not checking another screen or thinking about another device. It’s still your watch, just better.

The HeirBand is also a smart addition. You can throw it in your gym bag, swap it in seconds, and keep tracking without worrying about sweat or damaging a leather strap.

Ganance the heir smartwatch 4 — Image: Ganance

Who It’s Actually For

The Heir is not here to replace your smartwatch. Heart rate tracking, detailed fitness metrics, or the ability to leave your phone behind. It simply cannot compete on that level. At least not yet.

But whether you have an obsessive collection of timepieces or just have that one special watch you never take off, The Heir gives you the basics without forcing you into a smartwatch.

Either you’re already tracking your steps but miss wearing a proper watch, or you’ve been holding off on smartwatches entirely.

Just be warned. Innovation does come with its drawbacks. Ganance is a start-up company looking to make a name for itself. Sure, they’ve got one hell of a product built around a solid idea, but execution is everything. While they’ve nailed how The Heir fits into your watch collection, it’s not quite as confident with its tracking.

A quick look at first impressions suggests there’s a lot of work still to do around connectivity and tracking features. Which means that while it might be a strong idea, it’s not necessarily a finished one just yet.