1
A real ECG-style sensor, not an optical guess
The pod reads your heart's electrical signal at your chest, holding 30–240 bpm accuracy to within 1 bpm even while you're sprinting, lifting, or throwing punches.
97% of users recommend Herz P1 products as the perfect health appliance.
Wrist trackers guess. The Herz P1 HR Chest Strap reads your heart's electrical signal directly, so the number on your watch is the number your heart is actually doing, from warm‑up to your hardest interval.
82,100+
people moving daily
90-Day
money-back guarantee
97% of users
would recommend it
Optical wrist sensors have to guess your heart rate from blood flow through your skin and they lose the signal exactly when it matters: mid-sprint, mid-set, arm swinging.
A chest strap sits over your heart and reads its electrical signal directly, the same method used in clinical ECG monitoring. No guessing, no lag, no dropped readings when your arms are moving.
The Herz P1 clips onto a soft, adjustable band, syncs over Bluetooth or ANT+ to whatever you already train with, and quietly logs 48 hours of data even when your phone is nowhere nearby.
Simple to wear. Impossible to fool.
ECG accuracy
Clip on, pair, go
48-hour memory
IP67 waterproof
Dual connection
Built to last
Real-time bpm on your watch or phone, accurate even at full sprint.
No dropped signal between sets, no matter how your arms move.
Pairs with your bike computer over ANT+ while your watch stays connected too.
Comfortable enough to forget you're wearing it through yoga or circuits.
Track heart rate variability to see how recovered you really are.
Low, steady readings confirm when it's genuinely a rest day.
Follow these 3 simple steps to get started!*
Step 1
Snap the pod onto the strap and adjust the band (65–95 cm) snug against your chest.
Step 2
Connect over Bluetooth 5.0 or ANT+ to your phone, watch, or bike computer.
Step 3
Live heart rate, HRV, steps, and calories show up the moment you move.
90 Day Money Back Guarantee
The pod reads your heart's electrical signal at your chest, holding 30–240 bpm accuracy to within 1 bpm even while you're sprinting, lifting, or throwing punches.
Pair your phone, GPS watch, and bike computer all at once. No switching, no re-pairing between devices mid-ride.
A soft, adjustable band (65–95 cm) holds the sensor snug against your skin, so readings stay clean through burpees, sprints, and everything between.
Red for charging or low battery, green for fully charged, white for no data, blue for actively monitoring, so you always know it's working before you start.
Rain, downpours of sweat, or a splash on the trail — the P1 keeps reading and keeps 48 hours of history stored on-device either way.
Comparison is illustrative and for general guidance only. Wrist-based watch figures vary widely by model and manufacturer.
Not for You? Send It Back
Wear the Herz P1 HR Chest Strap for a full 90 days. Run it through your regular training, your hardest sessions, and your rest days. If it isn't the most trustworthy heart rate reading you've worn, send it back for a full refund. The only thing you risk is training with better data.
4.9
Based on reviews from 82,100+ customers
My old watch said my heart rate barely moved during sprints. This strap shows what I actually feel, no more wondering if the number is real.
Marcus D.
Verified Review
I ride with a Garmin and a bike computer, and this connects to both without any fuss. That alone was worth the upgrade.
Priya S.
Verified Review
Was worried a chest strap would be uncomfortable through a whole HIIT class. It genuinely disappears after the first few minutes.
Denise R.
Verified Review
Poured rain the whole race and it never lost signal once. Data was still there waiting for me when I got home and opened Strava.
Tom K.
Verified Review
I check it every morning before deciding how hard to train that day. It's become part of my routine more than my watch ever was.
Carol P.
Verified Review
I train five days a week and only charge it every couple of weeks. Simple, no app fuss, just works with Wahoo.
Linda M.
Verified Review
The Herz P1 Smart Health
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We Have Your Answers
Yes. The Herz P1 HR Chest Strap broadcasts over Bluetooth 5.0 and ANT+, so it pairs with the factory X-FITNESS app as well as leading third-party apps and devices including Strava, Wahoo, Polar Beat, GPS watches, and gym equipment.
The Herz P1 HR Chest Strap reads your heart's electrical signal directly at your chest, holding 30–240 bpm accuracy to within ±1 bpm. Wrist-based optical sensors estimate heart rate through your skin and commonly lose accuracy during fast arm movement or intense effort.
Yes, the Herz P1 HR Chest Strap is IP67 rated, built to handle heavy sweat, rain, and everyday training conditions.
It's powered by a rechargeable Li-Ion battery with a charging cable included. An LED indicator shows red while charging or low, and green once it's fully charged.
The included black chest strap adjusts from 65-95cm/26-37in, fitting most adult chest sizes comfortably.
No. The Herz P1 HR Chest Strap stores up to 48 hours of heart rate data on its own, so you can train without your phone and sync afterward.
Every Herz P1 HR Chest Strap comes with a 90-day money-back guarantee. If it isn't right for you, send it back for a full refund, no questions asked.
90 Day Money Back Guarantee
