✓ Battery 4 to 14 days

✓ Price $199 to $356

✓ Subscription Optional

✓ iPhone + Android

✓ Water IP68, 1m / 2hr

✓ Sensors 5 LED, 4 PD

At 6:14 a.m. the Hume Health app shows a Metabolic Capacity of 78, a Pace of Aging trending downward by 0.04 per year, and last night's deep sleep at 24 percent of total time in bed. That is the screen the Band 2.0 is selling. Not a strain score. Not a closed ring. A read on how your body is moving through time.

Hume Band 2.0 is a 24/7 wearable that frames itself around longevity, not workouts. It tracks the same physiological inputs as the big-name fitness wearables. Continuous heart rate, HRV, SpO2, respiratory rate, sleep stages, skin temperature, activity. Then it runs those signals through scores that point at long-range health rather than today's training load. Metabolic Capacity reads as a readiness number you can act on in the morning. Metabolic Momentum tells you whether your trajectory is improving or sliding. Biological Age and Pace of Aging give the long view that most fitness wearables avoid.

You get signals you can use to change a habit, not diagnoses pushed at you without context. Blood pressure tracking is listed as a future feature pending FDA approval, so it does not show up as an active capability in the app today.

The wear experience holds up. The Band runs on a multi-day charge, which Hume lists at 14 days on one FAQ page and 4 to 5 days on others depending on use. The IP68 rating keeps it on through showers, swimming, and workouts. Sync runs over Bluetooth to either iPhone or Android, so the device does not lock you to a phone ecosystem.

✓ Battery 14 days

✓ Price $199 to $359 / yr

✓ Subscription Required

✓ iPhone + Android

✓ Water IP68, 10m

✓ Display Screenless

Run the WHOOP pricing math forward three years. One at $199 a year totals $597. Peak at $239 hits $717. Life with the MG hardware at $359 lands at $1,077. That is the cost of the data, not the device. WHOOP does not sell the band. It sells the membership, and your data lives or dies with the renewal.

That model has earned one of the most loyal followings in wearables. WHOOP 5.0 launched in May 2025 alongside the MG hardware. It is screenless, 7 percent smaller than the 4.0, and runs 14 days on a charge. The app frames the day around three scores. Recovery in the morning, Strain through the day, Sleep at night. Peak adds Healthspan, WHOOP Age, and Pace of Aging, the same family of longevity signals Hume centers on. Life with MG adds ECG, Heart Screener, AFib detection, and Daily Blood Pressure Insights in beta.

For competitive athletes and serious training nerds, WHOOP is still the cleanest expression of a recovery-and-strain product on the market. The data is dense. The coaching tone is sharper than most apps. The screenless form fades into the wrist over time.

The friction shows up for the 35-to-55-year-old who is not in peak training and just wants long-range insight into their own health. After year one, the subscription becomes a recurring decision. After three years, you have paid hardware money several times over with no path to own the device outright. Cancel, and the data access goes with it.

Where Hume Diverges

Same longevity scoring family (Pace of Aging, biological age signals), but the data and the scores stay accessible after a one-time hardware purchase. Premium is optional, not the price of entry.

✓ Battery 24 to 72 hours

✓ Price From ~$399

✓ Subscription Optional (Fitness+)

✓ iPhone only

✓ Water 50m / dive-rated

✓ Chip S10

Apple sells more wearables than any other company on the planet. Apple Watch Series 11, Ultra 3, and SE 3 are the current lineup, and on raw feature count, nothing comes close. ECG, blood oxygen, sleep apnea notifications, hypertension notifications, irregular rhythm alerts, cycle tracking, depth gauge on Ultra 3, dual speakers, a third-party app store. That is the catalog.

What the catalog does not solve is the basic problem with smartwatches and health tracking. Battery life. Series 11 lasts up to 24 hours on a normal charge and 38 hours in Low Power Mode. Ultra 3 stretches to 42 hours, 72 in Low Power. That is enough for a day plus a bit. It is not enough to stay on your wrist for a continuous 30-day read of sleep, recovery, and HRV without a charging gap somewhere.

Either you charge at night and lose the most useful health signals (deep sleep, sleep apnea events, morning HRV). Or you charge during the day and lose the workout, the meal response, the afternoon stress curve. The watch was never made around the always-on health record. It was made around being a watch.

For an iPhone owner who wants apps, notifications, and a strong baseline of clinical-grade health features, Apple Watch is still extraordinary. For someone whose priority is the long-range health story on a 24/7 wrist record, it is the wrong tool for the job.

Where Hume Diverges

Multi-day battery designed around 24/7 continuous tracking, no daily charging cycle, works with both phone ecosystems out of the box. The data record stays unbroken.

✓ Battery Up to 10 days

✓ Price $99.99

✓ No Subscription

✓ iPhone + Android

✓ App Zepp (free)

✓ Hero Metric BioCharge

At $99.99, the Amazfit Helio Strap costs about a third of the Hume Band and a fifth of WHOOP's annual fee. No subscription. Up to 10 days of battery. Screenless. On paper, this is the closest thing to a budget Hume in the lineup.

Helio Strap runs through the free Zepp App. It captures continuous heart rate at the per-second level, plus HRV, SpO2, sleep stages, stress, exertion, and a daily BioCharge score that summarizes energy and readiness. It covers 50-plus workout modes, includes smart strength training, and is the official strap for HYROX Race mode. Amazfit has also tied the strap into a broader fitness system with sync into Strava, TrainingPeaks, adidas Running, and komoot.

What it does not capture is the longevity story. BioCharge is an energy and recovery metric, in the same family as WHOOP's Recovery score. It tells you whether you are running low or running ready today. It does not estimate biological age, pace of aging, or metabolic momentum across months and years.

One more thing worth flagging. As of this review, the black model is listed as "Coming Soon" on Amazfit's official page. The product is real and the spec sheet is published, but availability is in flux.

For an athlete or a heavy strength-training user who wants real fitness data without the WHOOP subscription, Helio Strap is a strong pick. For the 40-something professional who wants to read their long-range health trajectory, it stops short of where Hume picks up.

Where Hume Diverges

Longevity scoring including Biological Age, Pace of Aging, Metabolic Capacity, and Metabolic Momentum. Helio Strap delivers daily energy readiness. Hume delivers the long-arc trend.

✓ Battery 12 to 27 days

✓ Price $549 to $1,999

✓ Subscription Optional

✓ iPhone + Android

✓ Water Dive-rated (fēnix)

✓ Standout Satellite + LTE

Garmin's two newest wearables aim at a different shopper than Hume Band. Venu 4 starts at $549.99 and arrives in September 2025. The fēnix 8 Pro AMOLED starts at $1,199.99 and tops out at $1,999.99 for the 51mm MicroLED variant. These are not casual purchases. They are anchor pieces in a multisport, outdoor, or off-grid setup.

Venu 4 is the lifestyle smartwatch. Full AMOLED display in 41mm or 45mm, 12 days of battery in smartwatch mode, ECG, HRV status, Body Battery, sleep score, recovery time, training readiness, Garmin Pay, music storage. The health stack is dense and clinically respectable.

The fēnix 8 Pro is the headline product. It is Garmin's first smartwatch with inReach satellite messaging and LTE cellular onboard. Phone-free texting, location check-ins, voice calls, LiveTrack, and SOS through Garmin Response all come into play with an active satellite plan. Add the dive ratings, TopoActive maps, endurance score, hill score, and titanium bezels and the picture forms of a product made for trail running, alpine climbing, expedition diving, and ultra endurance work.

Neither watch is centered on longevity in the Hume sense. Body Battery and HRV status are recovery-and-readiness signals, not biological-age or pace-of-aging estimates. The 30-to-55-year-old health buyer who wants long-range health trends is not the Garmin core customer. The outdoor athlete who needs a satellite SOS at 15,000 feet absolutely is.

Where Hume Diverges

Longevity-first scoring at one-third to one-tenth the price. No satellite overhead, no subscription on top, no fitness-prestige tax. The Band is made for everyday health, not weekend expeditions.

✓ Battery 7 days

✓ Price $99.99 / $129.99 SE

✓ Subscription $9.99 / mo (some)

✓ \iPhone + Android

✓ Skin Temp Not listed

✓ App Google Health

Google relaunched Fitbit hardware in May 2026 with the Fitbit Air, a screenless tracker that runs through the new Google Health app. $99.99 standard. $129.99 for the Stephen Curry Special Edition. Seven days of battery. A 5-minute fast charge buys a day of power. On the surface, this is the most accessible health wearable in the lineup.

Fitbit Air captures 24/7 heart rate, heart rhythm with AFib alerts, SpO2, resting heart rate, HRV, sleep stages, and sleep duration. Auto workout detection covers the basics. The Special Edition with Stephen Curry branding shipped on May 26, 2026.

The catch sits inside the subscription model. The Band ships with a 3-month Google Health Premium trial. After that, Premium renews at $9.99 a month unless you cancel. Google notes that some features require Premium, but the page does not lay out exactly which ones live free and which sit behind the paywall. That is the question worth asking before checkout, because it changes the long-run cost calculation.

There is also a sensor gap. The official spec sheet does not list a skin temperature sensor, which puts the Fitbit Air a step behind Hume, WHOOP, and Apple Watch on the temperature-trend reading that matters for cycle tracking, illness onset, and sleep quality context.

Where Hume Diverges

Skin temperature sensor included on the Band. Longevity scoring without a paywall. No subscription pressure on the basic health insights, and a clear answer to "what do I get for the one-time price."