What this product is
Polar Loop is a device sold by Polar.
From the maker's page. See the maker's page ↗ We don't repeat the maker's health claims.
What it measures
Wareable says it tracks heart rate continuously, even overnight, and measures heart rate variability during sleep. wareable.com ↗
Stuff says it records heart rate, step count, training activity and sleep, with no on-board GPS. stuff.tv ↗
How well it works in independent tests
The5KRunner found it less accurate than Polar's OH1/Verity Sense, but accurate enough on the biceps in one tester's trials. the5krunner.com ↗
Active Gear Review saw wrist heart rate spikes; a bicep band helped but was not perfect. activegearreview.com ↗
Stuff found heart rate matched a pricier sports watch and a chest strap, but workout detection missed sessions. stuff.tv ↗
Subscription
Wareable says you pay only for the hardware; the Polar Flow app is free. wareable.com ↗
Battery life
Active Gear Review reports up to 8 days from a 170 mAh battery; its test ran about 8 days. activegearreview.com ↗
Stuff says Polar officially rates it at eight days, and the reviewer routinely got a week. stuff.tv ↗
What the maker offers
Active Gear Review lists the box contents: sensor, two bands, charging cable and quick start guide. activegearreview.com ↗
Stuff says it comes in three colours, and spare straps cost extra. stuff.tv ↗
Each line rests on a passage quoted word for word from the linked page (hover the link to see it). Accuracy comes only from pages independent of the maker.
About this kind of device
Fitness trackers: watches, bands and rings
Smartwatches and fitness trackers are wrist-worn monitors that people commonly use to count their steps each day.
Main risk: The pages stress that wrist-worn monitors may not count steps as accurately as hip-worn pedometers.
Research stage 2: small studies in people. What it measures and the research →
This is research on this kind of device in general, not proof that this model is accurate or right for you.
Outside reviews
No independent reviews of this product found yet.
This is general information gathered from the sources listed, not medical advice. Talk to your doctor before starting anything new.