Suunto Vertical 2 Titanium Sage Run A-10 has two variants with

A-10 has two variants with needles balanced for either the northern or southern hemisphere

Heart rate variability measurement: Yes

Some people choose to watch from the sidelines

The black strap kit for Suunto HelO2

Compatible with Suunto Race 2 and Suunto Vertical 2

Suunto Vertical 2 Titanium Sage Run A-10 has two variants withDark brushed titanium, Black case and striped two tone silicone strap in Sage Green. For adventurers who demand the best when testing their limits far from the trailhead and cell service. The Suunto Vertical 2 improves upon the original with a brighter, larger LTPO AMOLED screen, a redesigned optical heart rate sensor coupled with a flat lay backpanel for a better fit, and a built in LED flashlight that provides safety and convenience after dark; all