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Is the 745 the same size as the 245?
The 745 is slightly bigger than the 245, but smaller than the 945, each by about a millimeter. 44.4 x 44.4 x 13.9, 43.8 x 43.8 x 13.3 and 42.3 x 42.3 x 12.2. More importantly. Why be concerned what others think and not just buy the watch that's most comfortable and looks best to you?
Why does it matter which looks better? Just wear the one that fits your needs and is the most comfortable
Unless you have a need to care what others think about the watch on your wrist. It's a Garmin, not a Rolex