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Polar A370 has All Day HR Measurements and Advanced Sleep Tracking

May 27, 2017

The announcement of the Polar A370 ($179) with 2 key upgrades brings a much desired face lift for the aged A360. If some of you recall, the A360 wrist wearable was Polar’s maiden attempt at including optical heart rate sensors into their fitness trackers. That attempt about 2 years back went on to birth the Polar M600, the M200 and recently, the M430 and M370; all imbued with Polar’s in house algorithm with wrist based heart rate measurements.Polar A370 on wrist female modelWith the Polar A370, all day heart rate monitoring is now a dream come true. This feature was sorely missing in all of Polar’s devices that feature all day HR monitoring. As to the reasons why…

“The utility of traditional heart rate monitors has been limited to workout sessions only; but what about the other 23 hours of the day? Understanding those hours – whether spent training, resting or doing light activity – is crucial to achieving fitness goals,” says Tom Fowler, President of Polar U.S.A.

Polar A370 Features

  • All day activity tracker. Records steps, distance and calories.
  • Continuous all day heart rate measurements at 5 minutes interval
  • Assisted GPS – Use your phone’s GPS to Track speed, distance and route
  • Improved sleep analysis – get the valued insight you need to get a good Nights rest
  • Broadcast heart RATE – the A370 can be used as a hr sensor. Pair it to your favorite fitness app
  • 3rd party compatibility – exercise and activity data is automatically sent and is available to be used in services where you allow it
  • Vibration enabled for sedentary alerts, smart notifications and alarms
  • Water proof
  • Battery life up to 3 days with 24/7 activity tracking, including 1 hour of training per day

Besides all day heart rate measurements, the other key feature is the advanced sleep tracking metrics. Polar proprietary Sleep Plus algorithm uses polysomnography as a reference measurement. Apparently, the A370 is designed to provide accuracy in sleep detection at the same level of the polysomnography standard.

Polar A370 sleep tracking

Polysomnography typically captures readings such as brain activity, eye movements, muscle activity activation and ECG during sleep; involving way more metrics that a wrist wearable is capable of. I reserve my judgement on the accuracy of sleep tracking accuracy on wrist wearables though It’d be interesting to check out the validation studies of the Polar A370 as compared against polysomnography.

Polar A370 all colours

The new Polar A370 can also broadcast HR to compatible 3rd party apps and tap on the connected mobile device’s GPS to track route, pace and distance. Battery life is decent but not outstanding but the wearable being waterproof makes up for it.

Polar A370 will retail at $179/€199 and  will begin shipping in early June. Interchangeable bands come in black, white, ruby red, petrol, deep blue, and orange which are interchangeable with the current A360.

Source: Polar

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