Push yourself to the next level and monitor your performance with the VO2 Max and pulse OX on this Garmin Watch.What we love- If you're serious about your training, advanced metrics such as VO2 Max let you feel in total control of your work out- Get around easily with the GPS, 3-axis compass, altimeter and barometer - giving you accurate tracking, even in the most challenging environments- No matter what you're doing, the military-standard casing is thermal-, shock- and water resistant up to 100 m, so it can keep going as long as you do- Heart rate, stress and pulse OX can be measured and tracked on your watch, so you can monitor your wellnessGood to know- Regular smartwatch mode lasts up to 21 days without charging, while Battery Saver mode can last up to 50 days- Get that well-deserved rest after a difficult workout, the recovery time will let you know when you're ready for more- Receive a full breakdown of your light, deep and REM sleep stages to improve your sleeping habits- Find out your fitness age and get tips on how to lower it___________________Please note: This is not a medical device and is not intended for use in the diagnosis or monitoring of any medical condition; see Garmin's website for details. Pulse Ox not available in all countries.