MANUFACTURING
Where the ring is actually built
Smart rings are a sealing problem as much as an electronics problem. A 2.9 mm band has to survive 5–10 ATM, keep an optical window clean against skin, and hold a battery that does not swell after 300 cycles. Our production flow is organised around those three risks.
Production flow
- Incoming inspection — titanium and ceramic shells, cells and sensor modules checked against drawing and lot.
- SMT and module assembly — flexible PCB population, optical sensor alignment, cell connection.
- Calibration — PPG baseline and temperature offset calibrated per unit, not per batch.
- Sealing and shell assembly — gasket placement, press-fit, adhesive cure under controlled humidity.
- Water resistance test — pressure test per unit at the rated depth before packing.
- Ageing — charge/discharge cycle and continuous-run test to catch early cell and sensor failures.
- Final QC and packing — function check, appearance check under magnification, serial recording, packing.
Quality control points
| Stage | What is checked | Failure handling |
|---|---|---|
| Incoming | Shell dimensions, cell capacity, sensor module function | Lot rejected and returned to supplier |
| In-line | Sensor alignment, seal integrity, firmware flash | Unit pulled, root cause logged |
| Water test | Pressure hold at rated depth | Rework or scrap, never downgraded |
| Ageing | Charge cycles, runtime, temperature drift | Batch hold and re-test |
| Final | Function, appearance, pairing, app connection | 100% screening before packing |
Compliance documents
Test reports for CE, FCC, RoHS and REACH are issued per order and per model, and UN38.3 battery reports are supplied for air freight. We do not describe a product as certified until the report for that exact model and order exists.
What we do not claim
We publish no factory-area, headcount or capacity figures you cannot verify on a video call. If you need a factory audit, a live video walkthrough or third-party inspection before your first order, ask for it in the inquiry and we will schedule it.