Garmin Forerunner 235

Lightweight and comfortable, the Garmin Forerunner 235 was built with runners in mind. Equipped with a wrist-based Elevate heart rate monitor as well as GPS and GLONASS capabilities, the watch tracks distance covered, pace, pulse, VO2 max, and whether you’re in your target heart rate zone. Running indoors? An accelerometer takes over for the GPS to estimate distance. All accumulated data is compiled onto easy-to-read maps, charts and graphs on your smartphone, and with a battery life of 9 days including activity tracking — or 11 hours total of hard training with location tracking — you’ll easily take it from the city to the gym or trail without having to worry about topping up every night.

Check it out at Amazon – $330