Garmin Instinct Solar

Exceptional battery life ; Well designed interface ; Great range of activities, including triathlon

Plastic case looks a little cheap ; Black and white display

The Garmin Instinct Solar might not be the most attractive multi-sports watch around. but the Instinct range is very practical, with incredible battery life thanks to its Power Glass lens, which keeps it topped up in daylight. It's not just a...

Really long battery life ; Solar charging gives extra life in summer ; Accurate activity and fitness tracking ; Relatively affordable

Monochrome display has limitations ; No onboard music or Garmin Pay

This Garmin fitness watch has the best battery life of its entire range - and that alone is enough to sell it. You don't have to compromise on sports or health tracking capabilities to get it, and - in summer - the already great battery life is boosted...