You're about 12 miles into your long run and wouldn't you know it, your watch has decided it's about to die here on top of this mountain. To prevent your 20+ mile day from becoming a '+ mile day, there's the all new Suunto 9 Baro. Designed to balance battery saving and accurate GPS tracking, this watch is an invaluable tool for the dedicate long-distance athlete. With three distinct battery modes, you can be reassured of long lasting performance when you head out on the trail. You've got 25 hours of battery life with Performance mode, 40 with Endurance, and up to 120 hours with Ultra mode. The Suunto 9 also sends you smart reminders based on your activity history to ensure that you're always charged up for your next run. If you do find yourself out in the backcountry with low juice, the watch will automatically suggest switching to a different training mode to conserve battery life. One of the biggest problems with ultra athletes and GPS watches is battery life. On longer runs, GPS frequency is often reduced in order to preserve battery life, which may lead to a less accurate reading, especially on technical trails and tight switchbacks. Suunto's response to this problem is their FusedTrack algorithm. FusedTrack fills in the gaps of waning GPS signals with motion sensor data, ensuring both a more accurate reading and a prolonged battery life, so you can feel comfortable heading out for hours at a time. Of course, extended battery life is only so great if there are features worth keeping charged, and with the Suunto 9 there certainly are. You've got a built-in heart rate monitor in the wrist to help you monitor your body's performance during speed workouts and high-altitude runs. Speaking of altitude, this watch has a FusedAlti altitude tracker that works similarly to FusedTrack, combining GPS and barometric altitude for a more accurate reading. Weather tracking gives you temperature readings and storm warnings, while speed tracking, plenty of log storage, and ove...