POLAR GRIT X2 PRO

"You can't be anything other than impressed with the GPS, whose design is one of the significant changes to the V3"

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Polar's following a trend: release a new Vantage incarnation now) - soon after, release a new Grit, taking near enough all of the features from the Vantage with you but adding a slightly gnarlier exterior that screams 'outdoor adventure'. That's certainly the case with the Grit X2 Pro, which is the Vantage V3 plus a bulletproof stainless-steel outer.

That's arguably no bad thing as, firstly, that means a crystal-clear AMOLED display that's beacon-like in all conditions, which'll pay off if you use this watch as nature, and Polar intended, which is well off the beaten path. Do so and, in this environment and all others experienced during the test period urban, rural... you can't be anything other than impressed with the GPS, whose design is one of the significant changes to the V3. It picks up and maintains signal superbly for the bike and run. For open-water swimming, it's not as sharp, though is water resistant to 100m, which is another minor upgrade to the V3 and its 50m limit.