WatchFitTool

Fitbit vs GarminWatch Sizes & Range Compared

On average Garmin watches run larger than Fitbit (45.0mm vs 40.3mm average case width), so Fitbit is generally the easier brand for smaller wrists.

MetricFitbitGarmin
Models with size data10257
Case size range38.6–42mm15–52mm
Average case width40.3mm45.0mm
Smallest modelIonic (38.6mm)vívosmart® 4 (15mm)
Largest modelBlaze (42mm)Descent™ Mk2 (52mm)
Thinnest modelVersa Lite (11.2mm)Venu X1 (7.9mm)