GPS Runnning Watch Garmin Forerunner 30, Ametist, 128 x 128 pixels; sunlight-visible, transflective memory-in-pixel (MIP); glass lens, rechargeable lithium-ion; Smart Mode: Up to 5 days, GPS mode: Up to 8 hours, Water rating: 5 ATM, Garmin Elevate wrist heart rate monitor, Interval training, Calories burned, Time/distance alerts (triggers alarm when you reach goal)GPS-based distance, time and pace