Apple vs FitbitWatch Sizes & Range Compared
On average Fitbit watches run larger than Apple (40.3mm vs 36.4mm average case width), so Apple is generally the easier brand for smaller wrists.
| Metric | Apple | Fitbit |
|---|---|---|
| Models with size data | 74 | 10 |
| Case size range | 33.3–44mm | 38.6–42mm |
| Average case width | 36.4mm | 40.3mm |
| Smallest model | Watch Series 3 - GPS · Cellular · 38mm (33.3mm) | Ionic (38.6mm) |
| Largest model | Watch Ultra 3 (44mm) | Blaze (42mm) |
| Thinnest model | Watch Series 11 - GPS + Cellular · Titanium · 46mm (9.7mm) | Versa Lite (11.2mm) |