Today’s firmware update brings Nightly Recharge, Sleep Plus Stages and Serene to the Polar Vantage V and M sports watches. This is a pretty big and much anticipated upgrade.
Essential reading: Top fitness trackers and health gadgets
Arguably the most interesting of the lot is Nightly Recharge. This is an overnight recovery measurement that shows how well your autonomic nervous system calms down during the early hours of sleep. The info is tied in with your daily activity stats to let you know whether to take a days rest, train as usual or push harder.
The Nightly Recharge value fluctuates between -10 and +10. Around zero is your typical level. The higher the score the better – it means it took you less time than usual to go into relaxation mode.
If you find you’re stressed out or just tired from all the training, Serene might help. These are guided breathing exercises to help balance body and mind.
Tied with all of this are Sleep Plus Stages. Put simply this lets you know how much time you spent in light, deep and REM sleep.
The only feature now missing from the Polar Ignite is FitSpark guidance. But this will be slapped on in December.
Other than that, firmware update 4.0 brings GPS enhancements with added Galileo and QZSS satellite system support along with manual stride sensor calibration and Zone Lock. Update 5.0, which is slated for December, will come with Strava Live Segments support (only for Vantage V, Race Pace and FitSpark guidance.
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