
WhoopFitness Bands
WHOOP 5.0 Peak
The screenless recovery band, 7% smaller and sampling 26x a second — with the wireless PowerPack in the box.
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A two-sensor system — upper-arm heart rate plus a waist motion pod — built for HYROX and hybrid training.
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Helio Strap Pro
₹18,999 · choose a size
Battery
Up to 11 days (heart-rate module) and up to 44 days (waist module)
Water resistance
5 ATM (50 m)
Display
None — screenless dual-module system
Subscription
None — no recurring fee
The Helio Strap Pro is not one tracker but two, and that is the whole idea. Wrist optical heart rate falls apart during functional work — burpees, sled pushes, anything loading the forearm — so Amazfit moved the heart-rate module to the upper arm, closer to the heart and away from the interference, and added a second motion pod worn at the waist. The waist module reads posture, stability and body mechanics that a wrist sensor simply cannot see, which is what makes the muscular-load and HYROX race-mode tracking possible. Both modules carry a BioTracker 6.0 PPG array (5 photodiodes, 2 LEDs) plus accelerometer, gyroscope and geomagnetic sensors, and both are rated to 5 ATM. Battery life is the standout: 11 days for the heart-rate module and 44 days for the waist pod. There is no subscription, and it exports to Strava, Apple Health, Google Fit and TrainingPeaks. In the box you get both modules, the Pro Clip, a nylon wristband and armband, and a magnetic charger.
Bands are sized by wrist circumference, S through XL. If you are between sizes take the smaller one — an optical sensor needs to sit flush against the skin to read accurately, and a loose band is the single most common cause of bad heart-rate data.

WhoopFitness Bands
The screenless recovery band, 7% smaller and sampling 26x a second — with the wireless PowerPack in the box.

GarminFitness Bands
Garmin's first screen-free band — Body Battery, HRV status and training readiness, with no subscription at all.

WhoopFitness Bands
Everything in Peak plus the medical-grade WHOOP MG sensor — on-demand ECG and daily blood pressure insights.

Google FitbitFitness Bands
Google's 5-gram screenless pod — a week of heart rate, SpO2 and sleep tracking with no subscription to start.