Polar - Grit X2 Pro vs Suunto - Vertical Titanium Solar

The Vertical Titanium Solar is the clear pick on raw spec strength, leading by 31.0 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the Grit X2 Pro if you care most about ecg. The biggest gaps in its favor are ecg.

Pick the Vertical Titanium Solar if you care most about smartwatch mode and gps mode. Its strongest claims are smartwatch mode, gps mode, solar charging.

Both ship with comparable multi-band gps, so those specs don't separate the two — focus on the differences below.

Bottom line: the Vertical Titanium Solar is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.