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The Watch 7 comes in two sizes: 40mm and 44mm.
Heres what we found.

Overall Findings
Runs on new Wear OS 5 and faster processor.
Numerous advanced fitness and wellness features.
Starts at $330.
Potential one to two-day battery performance.
Wear OS 5 and updated, speedy processor.
Latest fitness and wellness features.
Starts at $300.
480 x 480 pixels.
40.4 x 40.4 x 9.7 mm.
432 x 432 pixels.
Both Galaxy Watch size variations are made of aluminum and have Super AMOLED Sapphire Crystal screens.
However, the overall dimensions and resolutions differ.
The 40mm Galaxy 7 has a 1.31-inch display.
It weighs in at 28.9 grams.
In contrast, the 44mm Galaxy 7 body measures 44.4 x 44.4 x 9.7 mm.
The display is 1.47 inches, 480 x 480 pixels with a 327 ppi.
The smaller 40mm might be less unwieldy for those with smaller wrists.
Battery Life: The 44mm Galaxy 7 Is Technically the Winner
425mAh capacity.
Can last up to two days.
Approximate day-long battery life.
Battery life is something of a head-scratcher with Samsung watches.
4mm larger display with higher resolution.
More screen area than the 40mm.
Unsurprisingly, youll have to shell out a bit more for the larger 44mm Galaxy Watch 7.
The 44mm size starts at $330, while the 40mm option starts at $300.
They run on the latest Wear OS 5 and offer better efficiency than prior models.
For a more statement-making display and extended battery life, the 44mm size is your best bet.