Head to head
Samsung Galaxy Watch9 40mmvsSamsung Galaxy Watch9 44mm
- Released
- 2026-08-07Samsung Newsroom UK — Galaxy Watch Ultra2 and Watch9, retrieved 2026-09-13
- Price
- £349Samsung UK store — Galaxy Watch9, retrieved 2026-09-13
- Security updates until
- Not published by the makerSamsung UK — How to update software on Galaxy Watch, retrieved 2026-09-13
- Released
- 2026-08-07Samsung Newsroom UK — Galaxy Watch Ultra2 and Watch9, retrieved 2026-09-13
- Price
- £379Samsung UK store — Galaxy Watch9, retrieved 2026-09-13
- Security updates until
- Not published by the makerSamsung UK — How to update software on Galaxy Watch, retrieved 2026-09-13
0 wins for Galaxy Watch9 40mm0 wins for Galaxy Watch9 44mm1 difference you won’t notice£30 apart at RRP
Verdict: nothing you’d notice between them
On the makers’ published figures, neither the Galaxy Watch9 40mm nor the Galaxy Watch9 44mm wins a row by a gap you would notice. The difference in weight (case only) is below the threshold you would notice. Both state the same peak brightness and battery life (maker's claim). The other 27 rows have no threshold or no direction to judge by, so nobody wins them.
True to scale
Case outlines from each maker’s published dimensions, drawn to scale. A round case is an ellipse at those figures.
Specifications
A win is marked only where the figures can be ranked and the gap is one you could notice on the wrist. A row the site has no threshold for says whether the two differ, and that it is not ranking them. = marks the same figure on both, ≠ not ranked a difference with no ranking. Every figure carries its source.
Body
Display
Platform
Battery
Health
Connectivity
5 attributes neither watch has a sourced figure for
Strap width · Display area · Charge to 80% · Blood oxygen · Blood pressure. Rows appear as sources are cited — a gap in our data, not a statement about either watch.
Other comparisons
The pairs a buyer of either watch would also weigh. Any two watches in the catalogue can be compared from the chooser.