The PowerTap PowerCal heart rate strap is the world’s first power meter calculated from a heart rate. Most pro riders will use power meters to determine the effort they put through the pedals. They also use a heart rate monitor to measure the physiological impact of that effort.
However, power meters are still luxury items for those with the bank balance to afford it. For many of us, we simply don’t have access to that power data to refine and hone our riding performance. The PowerTap PowerCal strap actually translates heart rate data in power-based training Watts, Kilojoules and peak power etc.
This is the culmination of intensive testing and research by PowerTap engineers and the University of Colorado, Boulder.
*HR Bluetooth strap only
first ever power meter calculated from heart rate
most affordable way to begin power training
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE to mainland UK, regardless of the size and value.
Please note: bulky products and bikes shipped to outlying UK regions are excluded from free shipping - Click here for more info.
Christmas is one of the busiest time of year for us at Tredz. We will try our best to get your products delivered before Christmas. To help you, please see our last postage dates for first class and 24 hour courier services below:
Any order dispatched on the 22nd & 23rd December will be delivered between 28th December and 30th December.
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We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
For more information please visit our Returns & Warranty page.