The Q watches do not have built-in GPS or heart-rate sensors, and aside from one model (the black silicone strap Explorist), they are not made for heavy exercise tracking. The watches’ IP67 rating means that they’re dustproof and ready for rain, and that they can survive a short dunk in water less than 3 feet deep. For tracking your walking, movement, light bike rides or occasional runs or hikes, though, the watch does fine.
Our top pick for most people is the Apple Watch Series 4 with GPS (starting at $399), which has a huge display, ultra-fast processor, Raise to Speak Siri, fall detection and a built-in electrical heart rate sensor for taking on-the-go electrocardiograms. It also runs watchOS 5, which makes the watch even more useful with automatic workout-tracking, offline podcast playback and a Walkie-Talkie voice chat feature.