Airframe from the front on the navy rubber strap with its block pattern: black GMT dial with a green 24-hour ring.

Airframe.First batch.

The watch, the strap and Tech Puck 1 inside it. The case is yours to keep, and later Tech Pucks fit the same case.

Edition

100 are made. When all 100 are reserved, the edition is not made again.

There is no price yet. Reserving is free: leave your email and your pick is held for you. Checkout opens with the first batch, and nothing is charged before you decide.

In the box

  • Airframe with Tech Puck 1 installed, engraved 1 to 100
  • Navy rubber strap with quick-release bars
  • Charging puck and cable
  • Screwdriver for the eight caseback screws
Delivery
Planned for the end of 2027. Reservations go out first.
Returns
30 days to wear it. Send it back for a full refund.
Guarantee
The 2-year legal guarantee, on the watch and the Tech Puck.
Replacements
Each layer swaps on its own at home: battery about €40, display about €80, a whole Tech Puck about €150. Not available yet.

Parts and replacements

What the watch might need later, at planned prices including VAT. None of it is available yet.

Replacements

Tested by us. Order the part and fit it at home.

  • Render of the black 400 mAh Airframe battery cell with its printed label.

    Battery

    about €40

    A new battery layer. Swap it at home with the screwdriver from the box.

    Not available yet
  • Render of the round main board on its own, its chips and parts facing up.

    Processor layer

    about €99

    The main board with the ESP32-S3, Bluetooth, NFC and GPS. Swap it at home.

    Not available yet
  • Render of the Tech Puck coming out of the back of the watch, the charging coil facing the camera and the caseback with its eight screws set aside.The Tech Puck pulled apart into its layers: display, board, battery, sensor board and charging coil.

    Tech Puck

    about €150

    A whole new Tech Puck, every layer at once. Later generations fit the same case.

    Not available yet
  • Render of the round AMOLED display lifted off the Tech Puck, with the board and its chips underneath.The display module on its own, tipped toward the camera, with its flex cable.

    Display

    about €80

    A new AMOLED display and touch layer. Swap it at home.

    Not available yet
  • Render of the clear sapphire crystal lifted straight off the watch case, the lit watch face underneath.

    Sapphire crystal

    about €59

    A new sapphire crystal and seal, fitted.

    Not available yet
  • Render of the round sensor board on its own, turned over so the sensors face up.

    Sensor layer

    about €49

    The board with the heart-rate and blood oxygen sensors that faces your wrist. Swap it at home.

    Not available yet
  • Render of the watch from below with the round caseback window lifted out beside it, the charging coil and sensors behind the opening.

    Bottom crystal

    about €25

    The window in the caseback the heart-rate sensors look through.

    Not available yet
  • Render of the small black vibration motor on its own, with the weight on its shaft.

    Vibration motor

    about €12

    The motor that buzzes for alarms and notifications. It sits in the Tech Puck.

    Not available yet
  • Render of the empty black PCB holder, a round tray with a honeycomb floor.

    PCB holder

    about €12

    The black tray in the Tech Puck that holds the board and the battery in place.

    Not available yet

Parts and straps

Sent to you and fitted at home.

  • Render of the watch from the side on the navy rubber strap, closed with its steel pin buckle and keeper.Close-up of the steel pin buckle and the strap's block pattern, with a tang hole in every centre block.

    Navy rubber strap

    Soft rubber with a steel pin buckle. Quick-release bars.

    Not available yet
  • Render of the watch from the side on the steel link bracelet, closed with its folding clasp.Close-up of the bracelet's brushed folding clasp and its release button.

    Steel bracelet

    Brushed steel links, folding clasp. Links come out to fit.

    Not available yet
  • Render of the watch above its charging puck, with the cable running out to the side.

    Charging puck

    The wireless charger the watch is tuned for, with a USB-C cable.

    Not available yet
  • Render of the empty one-piece case with its crown and two pushers, seen from above.

    Case

    about €59

    The one-piece aluminium case with the crown and both pushers. Your Tech Puck moves over with the eight screws.

    Not available yet

Specifications

Each line says whether it is measured, from the CAD, estimated or planned. Details can change before the first batch.

Heart
Heart rate, SpO₂, ECGSingle-lead ECG through the crown. Blood oxygen not calibrated yet
Sensors
Temperature, pressureSkin temperature, air pressure, motion and compass
Sleep
Sleep score, HRVOvernight heart rate and skin temperature. Beta at launch, stages later
GPS
Four systemsGPS, Galileo, GLONASS and BeiDou. Routes and an arrow back to a saved spot
NFC
Reads and writes tagsContactless payments are planned
Phone
Notifications, music, calendarReplies on Android; on iPhone in the EU from iOS 26.5 (planned)
Health apps
Apple Health, Health ConnectPlanned for launch. ECG stays in the Airframe app
Data
CSV, PDF, GPXExport straight to your phone
Account
None neededWorks offline and without a subscription
Display
1.43″ round AMOLED466 × 466
Chip
ESP32-S3, 240 MHzDual-core, on the replaceable Tech Puck
Battery
400 mAhWireless charging. About 5 to 7 days with raise-to-wake, estimated
Wireless
Bluetooth LE, Wi-FiPairs with iPhone and Android
Crystal
SapphireOver the display, scratch resistant
Size
50.3 × 57.6 mm54.1 mm wide with the crown, lug to lug from the CAD
Water
5 ATMTarget for the final case, pressure-tested before launch
Service
Eight screwsEach layer of the Tech Puck swaps on its own at home

Not included: LTE, microphone, speaker, app store.

How big it is,drawn to scale.

50.3 mm57.6 mmAirframe50.3 × 57.6 mmApple Watch Ultra 344 × 49 mmGalaxy Watch Ultra47.1 × 47.4 mm€1 coin23.25 mm
Width
50.3mm54.1 mm with the crown
Lug to lug
57.6mmTip of one lug to the other
Strap width
21.6mmBetween the lugs
Visible display
36.4mmDiameter of the round screen

A smaller size is planned after launch. Airframe drawn from our CAD; the case can still change before the first batch. Apple Watch Ultra 3 and Galaxy Watch Ultra (2025) from their published specifications.

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