Even the most dedicated fitness enthusiast can benefit from a smart partner. Suunto's M5 provides versatile guidance with optional
...The Hotronic M4 Power Plus Pack comes equipped with 2 M4 battery packs, heating elements with self-adhesive covers, & a global recharger everything you need to start warming your feet. The M4 battery uses 4 Ni MH cells, ideal for effective use in cold environments. It has easy to read LEDs, up to 21 hours of power & 4 heat settings for efficient warming. Perfect for making your time on snow that little bit more enjoyable.