Withings Watches Under 40mm

5 Withings models in the 0–40mm range, actually measuring 36.3mm to 39.5mm. Compact sizing that suits smaller wrists and dressier looks.

Thickness barely moves across the group — 13mm to 13.2mm — so these wear much alike under a cuff.

Releases run from 2019 to 2023, so this mixes current models with older references.

Under 40mm 40–44mm 44mm & Larger

Which of these fits your wrist?

Flat wrist width55.0mm

Roughly a 14.7cm wrist circumference — the measurement a tape gives you. Compared against lug-to-lug where we have it, case width otherwise.

5 of 5 models sit on this wrist without the lugs hanging over the edge.

Model	Your Fit	Width	Thickness	Shape
Steel HR - 36mm	Roomy9.4mm clear	36.3mm	13mm	circular
Steel HR Sport - 36mm	Roomy9.4mm clear	36.3mm	13mm	circular
ScanWatch 2 - 38mm	Roomy8.5mm clear	38mm	13.2mm	circular
Steel HR - 40mm	Balanced7.8mm clear	39.5mm	13mm	circular
Steel HR Sport - 40mm	Balanced7.8mm clear	39.5mm	13mm	circular

Same size, other brands

The middle of this group sits around 38mm. These are the closest matches we hold from other brands — useful when the size is right but the Withings isn't.