If you've already got a smartwatch you like, here's what I'd get in the Prime Day sales the Polar H10, the 'gold standard' electrical heart rate monitor

Date:
Tue, 23 Jun 2026 12:50:11 +0000

Description:
We use the Polar H10 to benchmark test heart rate accuracy in smartwatches now you can get that same accuracy at home.

FULL STORY ======================================================================Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Every smartwatch and fitness tracker comes with heart rate tracking, but they're not all accurate, so we test them against a Polar H10 chest-mounted heart rate monitor. The Polar H10 is used by athletes all around the world, and can be linked to a smartwatch
to provide incredibly accurate metrics using its electrode system. Now it's
on offer in the Amazon Prime Day sales , and if you care about fitness tracking, you should probably get one.

Browse the full Amazon Prime Day sale

The Polar H10 works with a strap that goes around your ribcage underneath
your heart, and connects the device to the electrodes running along the underside of your band. These electrodes monitor the electricity generated by your heart when it expands and contracts.

This is very different to (and more reliable than) the way smartwatches and the best fitness trackers measure your heart rate on your wrist. These
devices use LED-based optical heart rate monitors, shining lights through
your skin to measure your heart rate by detecting the changes in your blood flow. Electrical heart rate monitors are simply more accurate.

Fortunately, most smartwatches allow you to pair up a heart rate monitor like the Polar H10 via Bluetooth or ANT+ networks, so you can incorporate the more accurate data from the chest strap into your recovery and health metrics.
Most heart rate monitor users tend to wear them only during workouts for the more accurate data, then rely on other fitness trackers for a general 24/7 overview. So, if you care about your fitness tracking and you already have a smartwatch you like, the Polar H10 should be your next purchase. Where to buy Right now, you can get the Polar H10 heart rate monitor (with black M-XXL strap) for $76.99 (was $104.95) at Amazon US . Those who need a small strap will need to pay a little extra it's in XS-S for $89.21 (was $104.95) so you still get a little discount.

In the UK, you can get the Polar H10 with XS-S strap for 59.92 (was 70.49)
and the Polar H10 with M-XXL strap for 65.99 (was 86.70). US deal Polar H10 heart rate monitor (M-XXL): was $104.95 now $76.99 at Amazon The Polar H10 is widely considered the 'gold standard' of heart rate monitoring, and you won't find a more accurate measurement. It's got a one-year battery life, and the batteries are replaceable. You can use it on its own connected to a smartphone, or in tandem with a smartwatch.

Get the Polar H10 with XS-S strap for $89.21 (was $104.95) View Deal UK deal Polar H10 heart rate monitor (M-XXL): was 86.70 now 65.99 at Amazon A better deal than the one above, largely due to Polar being a European company, so it costs less to bring the device to the UK than it does the US. The Polar H10's electrical heart rate monitor is a dedicated device used by serious athletes worldwide.

Get the Polar H10 with XS-S strap for 59.92 (was 70.49) View Deal Polar alternatives There are other heart rate monitor designs out there, such as
the more expensive Garmin HRM 600 that interfaces with the Garmin Connect app in a less roundabout way than Polar.

Armbands exist too, if you prefer those to chest straps, although these tend to use optical technology rather than electrodes. The Polar Verity Sense and Coros Heart Rate Monitor are armbands, and during testing they've proved nearly as accurate as the H10 due to the placement on the arm being better than the wrist. Check out the best deals on those products below. Today's
best Garmin HRM 600, Polar Verity Sense and Coros Heart Rate Monitor deals Polar Verity Sense 73.52 View Prime Day See all prices Coros Heart Rate Monitor 12 View Deal See all prices We check over 250 million products every day for the best prices More Prime Day deals in the US Amazon Devices : Fire Sticks & Echo from $18 Amazon Haul: viral gadgets, tech & appliances from $1.99 Apple : MacBooks, AirPods & AirTags from $29 Beauty: 50% off toothbrushes & hair tools Cheap TVs: smart TVs from $69.99 Garden: tools, mowers, planters from $24.99 Headphones : 50% off Beats, Bose & Samsung Laptops: Apple, HP & Dell from $199 Mattresses: Sealy, Serta & more from $186 Patio: outdoor furniture, rugs & decor from $19.99 Sports: 50% off fitness gear, treadmills & clothing Vacuums : Dyson, Shark & Bissell from $34 More Amazon Prime Day deals in the UK Amazon Prime : sign up for a 30-day free trial Amazon Devices : Fire TV, Ring & Blink from 21.99 Apple : AirPods Pro 3 for a record-low price Appliances : up to 45% off Ninja, Tefal & Sage Essentials : household goods from under 10 Laptops : from 149.99 Tablets : Samsung & Lenovo from 125 TVs : from 129.99 Follow TechRadar on Google News and add us as a preferred source to get our expert news, reviews, and opinion in your feeds.



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Link to news story: https://www.techradar.com/health-fitness/fitness-trackers/if-youve-already-got -a-smartwatch-you-like-heres-what-id-get-in-the-prime-day-sales-the-polar-h10- the-gold-standard-electrical-heart-rate-monitor


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