The Polar H9 is our selection for the best-value heart rate monitor in our heart rate monitors for cycling guide. That value is even better, as the H9 is at its lowest-ever price on Amazon.

Right now, the Polar H9 is available for just £40.99, a massive 37% off the RRP of £60.90, and an overall saving of £23.91.

performance and how your body reacts to your training efforts. There is a huge range of heart rate monitors to choose from, with various levels of functionality and cost, but ideally you’ll want one that monitors your heart rate comfortably, consistently and accurately.

Polar has an established reputation for producing some of the best fitness tech, and the H9 and its H10 sibling hold coveted spots in our buying advice guide. The H10 heart monitor is our best overall choice, but it comes in at double the price of its H9 sibling.

For anyone just wanting a device that tracks your heartbeat, then the H9 is well worth considering, it has a good battery life, at 400hrs, is water- and sweat-proof, and has Bluetooth and ANT+ connectivity.

In his testing, Graham highlighted the excellent and reliable data recording, and that the H9 was comfortable, easy to adjust, and the connectivity was spot on.

Polar H9 heart rate monitor on a wooden counter top

(Image credit: Graham Cottingham)

Wahoo’s offering has all the bells and whistles when it comes to HR recording and a fairly hefty price tag to match when compared to the Polar H9.

The high-capacity rechargeable battery with over 100 hours of active battery life is the key difference between the two; the H9 has a replaceable coin battery. Elsewhere, Wahoo claims the Trackr delivers accurate real-time heart rate data “to enhance training efficiency and support optimal performance.”

However, the price point here is significantly different, and if ‘basic function’, i.e., monitoring heart rate while cycling, running, or swimming, is all you require, then the H9 is the way to go at this price.

Below you’ll find deals on all our picks in the best heart rate monitor guide, with prices relevant to your location.