The Garmin Forerunner 245 will do everything you need it to—and lots more. Garmin's newest running watch taps into GPS, GLONASS or Galileo satellite systems to keep tabs on your daily miles; a built-in heart rate monitor lets you know when to push it or when to back off; and a 5 ATM waterproof rating means it's good down to 50 meters. The new Foreunner 245 refreshes the outgoing Garmin Forerunner 235 by adding new features and improving some old ones. One of the biggest additions to the 245 is Garmin's Running Awareness features. The new features give you the ability to share your exact location with friends and family so they can keep track of you while you're out running or just follow along with your race progress. Garmin also built the 245 to sync with your smartphone so you can see texts, emails and other notifications on your wrist. Designers also improved the watch's Bluetooth capabilities and added new running metrics, like overall training load, Garmin Coach training plans and anaerobic training effect, to help you run smarter. (The Garmin Forerunner 245 Music gets additional Wi-Fi capabilities and storage and playback ability for up to 500 songs.) In a review of the Garmin Forerunner 245, our tester loved how comfortable the watch is and how easy it is to keep track of daily and weekly mileage. She used it during training for a 100-mile race, and the ample battery life kept her running through 80-mile training weeks. The upgrades make the lightweight, low-profile running watch an ideal partner for your training.