To tap into the power of the sun and increase the ruggedness of their wearables line, Garmin introduces the Instinct Solar Heart Rate Monitor with endurance for a daily active lifestyle. The heart of the Instinct is undoubtedly the solar battery, which extends battery life -- dependent on sun exposure -- a significant, if not an indefinite amount, across all modes. The most telling spec that calls attention to the highly valuable solar charging is the "unlimited" range of operation the Instinct has in battery saver watch mode and a near doubling of operation hours when using most other modes. It begs you to press further into the deep country with the connectivity you need to explore confidently.Garmin's central design intention is to "break convention" and crafts the Instinct to satisfy the more rugged adventurer instead of the aspirational urban exerciser that finds the Vivoactive line so appealing. Built to military standards of durability, the Garmin establishes the Instinct well for adventure races and outdoor physical fitness challenges where mud, grit, and course abrasions are almost assured. The Instinct withstands heavy impacts, heat, and 100 meters of water depth to provide the data capture you need during intensely strenuous exercises. Garmin intends the Instinct to be an ultimate outdoor recreation companion.However, this is still a modern Garmin, and being such the Instinct brings standard activity features like heart-rate tracking, body energy monitoring, and exercise specific tracking and guiding. Additionally, the Instinct can pair with partnering devices with Bluetooth and ANT+ like cycling speed and cadence sensors. Also onboard are familiar smartwatch features like texts, emails, and calendar events.