Buy the watch once.Upgrade what’s inside.
Battery, chip and sensors live on one Tech Puck. When they age, the Tech Puck is swapped and the watch stays yours.
It opens with eight screws.
Eight screws hold the back.
The screwdriver is in the box. Take the screws out and the caseback lifts off.
The Tech Puck comes out in one piece.
Display, chip, battery, sensors and radios are all on it.
Swap only the part that wore out.
Display, compute, battery, sensors, and a last layer with the vibration motor and charging coil. Each layer swaps on its own, or order a whole new Tech Puck and fit it with the eight screws.
It opens with eight screws.
Eight screws hold the back.
The screwdriver is in the box. Take the screws out and the caseback lifts off.
The Tech Puck comes out in one piece.
Display, chip, battery, sensors and radios are all on it.
Swap only the part that wore out.
Display, compute, battery, sensors, and a last layer with the vibration motor and charging coil. Each layer swaps on its own, or order a whole new Tech Puck and fit it with the eight screws.
The watch you keep.
Machined from one piece of aluminium, under a sapphire crystal.
The watch you keep.
Machined from one piece of aluminium, under a sapphire crystal.
What the Tech Puck carries.
Display, chip, battery, sensors and radios, as planned for launch.
Display
A 1.43-inch round AMOLED at 466 × 466.
Chip
ESP32-S3 at up to 240 MHz, with Bluetooth and Wi-Fi built in.
GPS
Its own satellite receiver, so your phone can stay home.
NFC
Hold an NFC tag to the caseback and the watch reads it.
Body sensors
Heart rate, blood oxygen, ECG and skin temperature, for fitness and wellbeing.
Battery
400 mAh with wireless charging. About 5 to 7 days per charge with raise-to-wake, less with daily GPS. That is an estimate; the tester watches will measure it.
Airframe is not a medical device. Blood oxygen is not calibrated yet.
Five faces to start with.
Pick one on the watch or in the app, and change it whenever you like.
Tachymeter
Twenty apps behind the face.
One swipe from the face: your run with GPS, last night’s sleep and the way back to a saved spot. The watch measures all of it itself.
- Sleep score
- One number for last night, from time asleep, wake-ups and heart rate.
- HRV and skin temperature
- Measured overnight. Sleep stages follow after launch.
- Seven nights
- The last week on the wrist, the longer history in the app.
Sleep tracking is in beta at launch.
Everything it measures, on your phone.
Steps, training, sleep, heart rate and blood oxygen from the watch, in one app.
One app for all of it
Activity, training, last night’s sleep and your health side by side.
Set it from either side
Change faces, sensors and radios on the watch or in the app, and choose which readings sync to your phone.
Paired in a minute
iPhone or Android. Confirm once on your wrist and it reconnects on its own.
Export your days
CSV or PDF for your days and GPX for your routes, saved straight to your phone.
There is no account to make.
The watch works on its own and keeps what it measures. You decide what goes to your phone.
- Works offline
- The watch runs with your phone switched off or out of reach.
- A switch for each sensor
- Heart, temperature, pressure, motion and compass each turn off on their own. So do Bluetooth, Wi-Fi, GPS and NFC.
- Off means unpowered
- Designed so that turning GPS or NFC off cuts the power to that chip.
- Stored with you
- Readings stay on the watch. You can sync them to your phone, but you don't have to. From the phone they leave only as a file you export or a sync you turn on, like Apple Health.
“Nobody replaces a watch because they stopped liking it. They replace it because the electronics aged.”
Lucas LenarcicFounder, Airframe, GrazThe ten tester watches come from this list.
They go out before the first batch, at a much lower price than launch.
- A place in the pool for the ten tester watches
- Your order window opens before everyone else’s
- A build note every month: what broke, what we fixed
Your email is all it takes. Free to join, nothing to pay now.
Where it stands
- Prototype 2
- Built and worn.
- Tester watches
- In development. Ten go out before the first batch.
- First batch
- Delivery planned for the end of 2027.
Questions
What does it cost?
There is no price for the watch yet. Joining the waitlist is free, and the people on it hear the price first. Parts have planned prices: a battery about €40, a display about €80, a whole Tech Puck about €150.
When can I get one?
Delivery is planned for the end of 2027. The ten tester watches go out before that. The list hears about every step first.
Who swaps the Tech Puck?
You do, at home. Eight screws hold the back and the screwdriver is in the box. Each layer swaps on its own, so you replace only what wore out: a new battery is about €40, a display about €80, a whole new Tech Puck about €150.
Does it work with my phone?
Yes, with iPhone and Android. You pair it in the app in about a minute. Notifications, music controls and your calendar reach the watch on both. On Android you can reply to messages from the watch; on iPhone replies are planned for the EU from iOS 26.5. The watch also works on its own, without an account.
Does it work with Apple Health?
Planned for launch. If you switch it on, heart rate, blood oxygen, sleep, steps and workouts go to Apple Health on iPhone or Health Connect on Android. Apple lets only its own watch write an ECG to Apple Health, so ECG recordings stay in the Airframe app.
Can I shower or swim with it?
Yes. The final case is built for 5 ATM, so showering and swimming are fine. It is pressure-tested before launch and the result goes on this page.
What if Airframe stops?
The watch keeps working. It needs no account and no server from us. If we ever stop, we release everything: schematics, board files, the parts list, the firmware and the app. A ready-built Tech Puck can then be ordered in a few clicks from our PCB manufacturer, PCBWay, without us.
How do I become a tester?
Join the list and confirm your email. The ten tester watches go to people picked from it, at a much lower price than launch. They come in a plastic case, so GPS, NFC and wireless charging can be tuned before the final case. Testers wear one every day and tell us what breaks.