
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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Google's 5-gram screenless pod — a week of heart rate, SpO2 and sleep tracking with no subscription to start.
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Fitbit Air
₹9,499 · choose a size
Battery
Up to 7 days; 5-minute quick charge gives 1 day, 90 minutes for a full charge
Water resistance
50 m (5 ATM)
Display
None — single status LED on the side
Subscription
Not required for core tracking
The Fitbit Air is the lightest thing in this category by a wide margin: a 5.2-gram tracking pod that snaps into a micro-adjustable woven band, for 12 grams all in. There is no screen at all, just a single status LED on the side, and everything surfaces in the Google Health app instead. Underneath it is a proper Fitbit sensor stack — optical heart rate running 24/7, separate red and infrared LEDs for SpO2, skin temperature, and an accelerometer and gyroscope for automatic activity and sleep-stage detection. It is rated to 50 m so it stays on in the pool and the shower, runs about seven days per charge, and a five-minute top-up on the magnetic dock buys another full day. The housing is recycled polycarbonate and PBT with a stainless steel buckle, and it pairs with both Android and iOS.
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.

AmazfitFitness Bands
A two-sensor system — upper-arm heart rate plus a waist motion pod — built for HYROX and hybrid training.

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