That drop, down from $169.99, is currently live on Amazon for the Amazfit Active Max, and it saves you $51 on a smartwatch built around the kind of offline navigation and multi-week battery that usually carries a much heavier price tag. 30% off A Garmin rival with 25-day battery and GPS maps, now a fraction of the price This Garmin-rivalling smartwatch with a 25-day battery and built-in GPS maps is now available for just a fraction of its usual price. Aside from a 30% cut, that $51 saving puts a watch built around genuine offline navigation and multi-day GPS squarely into impulse-buy territory, a price bracket this kind of hardware almost never reaches.