Equipped with Garmin's HRM-Tri heart rate monitor, the Fenix 5 Sapphire Performer Bundle offers a wealth of insightful metrics for multi-sport athletes training for an upcoming race. It's a stellar choice if you're a competitive athlete seeking every attainable edge over the competition through a regimented training schedule. This particular bundle comes with the Sapphire version of the latest Fenix 5, which upgrades the watch with a scratch-resistant sapphire crystal face, as well as an extra QuickFit band for on-the-go swapping. The bundled HRM-Tri measures what Garmin refers to as "Extensive Running Dynamics," such as cadence, stride length, ground contact time, ground contact time balance, vertical oscillation, and vertical ratio, alongside regular heart rate monitoring. For swimming, it wirelessly feeds heart rate data after you're finished to the Fenix 5, which is a huge plus for assessing your swim performance for an upcoming race. Please note, Garmin recommends this heart rate monitor mainly for open water environments, as pushing off the walls of indoor pools may require constant adjustments of the strap. Offering a long-awaited refresh to the popular Fenix 3, the Fenix 5 Sapphire retains the popular sport-monitoring capabilities, but in a sleeker 47-millimeter case with easier swapping of wrist bands. Another notable upgrade, the battery lasts up to 24 hours in GPS mode and 60 hours in UltraTrac mode. The Sapphire version has Wi-Fi connectivity, allowing you to seamlessly upload data to your smartphone app. Resolution is slightly better than the previous version, making it easier to view your exercise data in bright outdoor environments. Wrist-based heart rate monitoring is integrated into the watch itself, so you can leave the HRM-Tri monitor behind on casual neighborhood runs and hikes in the hills. Advanced Performance Metrics give you aerobic and anaerobic benefits from grueling workouts, so you can see how it's paying off in the long run and co...