Meet the Forerunner 225 from Garmin: a GPS running watch that also measures your heart rate to make sure you stay in the right zone. It relies on heart rate technology developed by Mio to measure your heart rate without a chest strap. The watch displays a colorful gauge with your zone and beats per minute info in real-time.
The watch is water resistant to 50 meters. It has a battery life of up to 4 weeks in watch mode with activity tracking. Its built-in accelerometer captures your distance and pace indoors. The watch costs $299.