TESTER / SMART WATCH / 002

Wear the instrument.

A field-grade chronograph for an off-grid life. Built around a sapphire sensor stack, polished from one billet of brushed titanium, and tuned for fourteen days between charges.

Caliber T-12 / Apex
Case Grade-5 Titanium
Endurance 14 days
Depth 200 m / 20 ATM
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Section / 01

Engineered like an instrument,
not an accessory.

Six things we obsessed over. The rest is downstream of these.

  1. 01

    Sapphire optic stack

    A six-channel photodiode array behind aerospace sapphire. Reads pulse, oxygen and skin temperature without losing accuracy under sweat or sun.

  2. 02

    Six-axis IMU

    Gyroscope and accelerometer fused at 1 kHz. Counts a stair, a stride or a swing. Knows the difference between a wave and a wrist-flick.

  3. 03

    Dual-band GNSS

    L1 + L5 multi-constellation positioning. Cleaner fixes in urban canyons and deep cover. Track in metres, not minutes.

  4. 04

    14-day endurance

    An LTPO display that drops to 1 Hz at rest, a sub-microamp coprocessor and a silicon-anode cell. Two weeks of ordinary use. Forty hours of full-fat GPS.

  5. 05

    200 m water resistance

    Pressure-tested to twenty atmospheres. Open-water swim, freediving, white-water — the Pro logs through all of it without a case change.

  6. 06

    AMOLED 1.4″ LTPO

    A 466×466 always-on panel that dims to a glance and pushes 2,000 nits in direct sun. Sapphire crystal up top, of course.

Section / 02 — Inside the Pro

Eighty-four components,
twelve millimetres thick.

We took the Pro apart on camera so you could see what your wrist will be wearing. Every part chosen for a single, stubborn reason.

A Bezel Brushed Grade-5 Titanium Machined from a single billet. 40% lighter than steel, 2× the yield strength. B Crystal 2.5 mm Sapphire Anti-reflective coated on both faces. Mohs 9 — scratches with diamond, not life. C Sensor block Six-channel PPG Green, red, infrared and UV diodes tuned for skin tones I through VI. D Cell 410 mAh Si-Anode Higher density than lithium-ion. Fourteen days, charged in forty minutes. E Caliber T-12 / Apex SoC Dual-core 1.4 GHz with a sub-μA always-on coprocessor.

Tester Tech / The wider instrument

One signal.
Every device.

The Pro is the wrist. Around it, a quiet constellation — smart glasses, ambient assistants, the lights you forget about, the ring you don’t. One mesh, one privacy ledger, one design language. Built in Berlin, tuned for the way you actually live.

  • ● Smartwatches
  • ● Smart Glasses
  • ● Ambient AI
  • ● Home Mesh
  • ● Wearables
Explore Tester Tech 12 products
in family

Contact / Open a file

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workshop.

Press inquiries, pre-order questions, partnership notes — leave a line and a member of the Berlin bench will reply within two working days.

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