... GPS: High-sensitivity SiRFstarIII architecture Heart rate monitor: Yes Measurements: Heart rate, speed, distance, pace, and calories burned Multi-sport capability ... x 100 pixels Alerts: Time, distance, pace, and heart rate Heart monitor transmission range: 9.8 feet Waterproof: Yes, ... ounces (heart monitor) Warranty: 1 year parts and labor What's in the Box: Forerunner 305 GPS unit, heart rate monitor, ...