Fits wrists from 9 Inches to 5.75 InchesMeasures activity vs. inactivity, calories burned, distance traveled, heart rate, hours slept, sleep quality and steps takenGPS enabledHeart rate monitorSmart notificationsWater resistantTracks running metrics

Garmin Forerunner 235 GPS Running Watch: Make the most of your workout with this watch, which uses a wrist-based Elevate heart rate monitor to calculate your VO2 max and help you predict race times for various distances. Track your activity levels and receive a nudge when you have been sitting for too long, and monitor your steps taken, calories burned, distance traveled and sleep quality and quantity for an overall picture of your physical fitness.