Wearable Finder: Smart Ring & Fitness Tracker Comparison

Specs table

33 of 46 wearables

Model Form US price Battery Weight Screen Membership Tracking Availability Source
Chargerless Ray Band From $219 Up to about 60 days in darkness from a full charge; daylight tops it up. 7 g without band None See current offer Sleep, heart rate, HRV, temperature, steps and light exposure; cycle tracking Currently sold Test results
Amazfit Band 7 Band $49.99 Rechargeable; up to 18 days 28 g with strap 1.47-inch AMOLED touchscreen None Activity, sleep, HR, SpO₂ and stress; cycle tracking Currently sold View sourceAugust 20, 2026
Amazfit Helio Ring Ring $149.99 Rechargeable; about 4 days 3.65 g (size 8) to 3.82 g (size 12) None None Sleep, recovery, HR, HRV, SpO₂, stress and EDA; cycle tracking; temperature Currently sold View sourceAugust 20, 2026
Amazfit Helio Strap Band $99.99 Rechargeable; up to 10 days 20 g None None for core features Sleep, recovery, exertion, HR and HRV; temperature Currently sold View sourceAugust 20, 2026
Apple Watch Series 11 Watch $399 to $749 Rechargeable; up to 24 hours 29.7–43.1 g case only, depending on model Always-on touchscreen None; Fitness+ optional Activity, sleep, HR, ECG, temperature, Blood Oxygen and GPS; cycle tracking Currently sold View sourceAugust 20, 2026
Fitbit Charge 6 Band $159.95 Rechargeable; up to 7 days 30 g Color touchscreen Optional Fitbit Premium Activity, sleep, HR, HRV, SpO₂, ECG, EDA and built-in GPS; cycle tracking; temperature Currently sold View sourceAugust 20, 2026
Fitbit Inspire 3 Band $99.95 Rechargeable; up to 10 days 17.7 g Color touchscreen Optional Fitbit Premium Activity, sleep, HR, HRV, SpO₂ and stress; cycle tracking; temperature Currently sold View sourceAugust 20, 2026
Garmin CIRQA Band $199.99 Rechargeable; up to 10 days per charge; Garmin proprietary plug charger, up to 90 minutes to charge 14.8 g module; 20.7–21.2 g with wrist band None None; Garmin Connect+ plan optional Sleep stages and score, heart rate, HRV status, Pulse Ox, skin temperature, stress, Body Battery, respiration, steps and auto-detected activities; cycle tracking Currently sold View sourceNovember 12, 2026
Garmin Index Sleep Monitor Armband $169.99 Rechargeable; up to 7 nights 14.5 g module; band 15.8 to 20 g None None Sleep, HRV, respiration, Pulse Ox and skin temperature; cycle tracking; heart rate Currently sold View sourceAugust 20, 2026
Garmin Lily 2 Watch From $249.99 Rechargeable; up to 5 days 21.4 g (leather band) or 24.4 g (silicone) Hidden-pattern touchscreen None Activity, sleep, HR, stress, respiration and Pulse Ox; cycle tracking Currently sold View sourceAugust 20, 2026
Garmin vívosmart 5 Band $149.99 Rechargeable; up to 7 days 24.5 g (S/M) or 26.5 g (L) Monochrome touchscreen None Activity, sleep, HR, stress, respiration and Pulse Ox; cycle tracking Currently sold View sourceAugust 20, 2026
Google Fitbit Air Band From $99.99; $149.99 with gold mesh and fabric loop USB charger; up to seven days per charge 5.2 g without the band; 12 g with the standard band None None for heart rate, sleep stages and sleep score; Google Health Premium is optional Heart rate, resting heart rate, HRV, sleep stages, sleep score, steps and workouts; cycle tracking; temperature Currently sold View sourceNovember 3, 2026
Google Pixel Watch 4 Watch $349.99 to $499.99 Rechargeable; about 30–40 hours 31 g without band (41 mm) Always-on touchscreen None; Fitbit Premium optional Activity, sleep, HR, HRV, ECG, SpO₂, temperature and GPS; cycle tracking Currently sold View sourceAugust 20, 2026
HUAWEI Band 10 Band Varies by market Rechargeable; up to 8 days typical / 14 maximum 14 g (polymer case) or 15 g (aluminium) 1.47-inch AMOLED touchscreen None Activity, sleep, HR, HRV, SpO₂ and stress; cycle tracking Currently sold View sourceAugust 20, 2026
Hume Band Band $249 Rechargeable; up to 14 days 8.6 g (reported in reviews) None None; Hume Premium optional Heart rate, HRV, SpO₂, respiratory rate, sleep, strain, recovery and skin temperature Currently sold View sourceNovember 12, 2026
Luna Band Band $149 Rechargeable; up to 10 days 24 g None None Heart rate, HRV, sleep, skin temperature, workouts and cycle tracking Currently sold View sourceNovember 12, 2026
Luna Ring 2.0 Ring $300 Rechargeable; up to 5 days, case up to 30 days 3 to 5 g by size None None Sleep, readiness, activity, HR, HRV, temperature and SpO₂ Currently sold View sourceAugust 20, 2026
Morpheus M7 Chest strap $97 sale / $119 list Rechargeable; 200+ hours claimed — None None Recovery, HRV and heart-rate-zone training Currently sold View sourceAugust 20, 2026
Oura Ring 4 Ring $349 to $399 Rechargeable; 5–8 days 3.3–5.2 g, depending on size None $5.99/month or $69.99/year Sleep, readiness, activity, HR, HRV, temperature and SpO₂; cycle tracking Currently sold View sourceAugust 20, 2026
Oura Ring 4 Ceramic Ring $399 on Oura's store (list $499) Rechargeable; 5–8 days 5.1–8.1 g, depending on size None Oura Membership $5.99/month for full features Sleep, readiness, activity, HR, HRV, temperature, SpO₂ and cycle tracking Currently sold View sourceNovember 12, 2026
Oura Ring 5 Ring $399 to $499 Rechargeable; 6–9 days From 2 g, depending on size None Oura Membership $5.99/month for full features Sleep, readiness, activity, HR, HRV, temperature, SpO₂ and cycle tracking Currently sold View sourceNovember 12, 2026
Polar Loop Band $169.99 Rechargeable; up to 8 days 19.5 g without band, 29 g with None None Sleep, recovery, activity, workouts, HR and HRV Currently sold View sourceAugust 20, 2026
RingConn Gen 2 Ring $269 sale / $299 list Rechargeable; 10–12 days plus case 2 to 3 g by size None None Sleep, activity, HR, HRV, temperature, SpO₂ and sleep-apnea screening; cycle tracking Currently sold View sourceAugust 20, 2026
RingConn Gen 2 Air Ring $199 Rechargeable; up to 10 days 2.5 to 4 g by size None None Sleep, activity, HR, HRV, temperature and SpO₂; cycle tracking Currently sold View sourceAugust 20, 2026
RingConn Gen 3 Ring $349 to $369 Rechargeable; 10–14 days depending on vibration 2.5 to 3.5 g by size None None Sleep, activity, recovery, HR, HRV, temperature and SpO₂; cycle tracking Currently sold View sourceAugust 20, 2026
Samsung Galaxy Ring Ring $399.99 Rechargeable; up to 7 days 2.3 to 3.2 g by size None None Sleep, activity, HR, temperature and energy score; cycle tracking Currently sold View sourceAugust 20, 2026
Samsung Galaxy Watch8 Watch $349.99 to $429.99 Rechargeable; duration varies by size and settings About 30 g (40 mm) Always-on touchscreen None Activity, sleep, HR, ECG, body composition, temperature and GPS; cycle tracking Currently sold View sourceAugust 20, 2026
Ultrahuman Ring AIR Ring $349 Rechargeable; up to 6 days 2.4 to 3.6 g by size None None for core features; paid PowerPlugs optional Sleep, movement, recovery, HR, HRV and temperature; cycle tracking Currently sold View sourceAugust 20, 2026
Ultrahuman Ring PRO Ring $399 to $479 Rechargeable; current store gives no battery-life figure 3.3 to 4.8 g by size None None for core features; paid PowerPlugs optional Sleep, movement, recovery, HR, HRV and temperature; cycle tracking Currently sold View sourceAugust 20, 2026
WHOOP 5.0 Band $199 to $239 for the first year, by membership tier Rechargeable; 14+ days per charge About 26.5 g (5.0) None Required annual membership Sleep, strain, recovery, HR, HRV and respiratory rate; cycle tracking; temperature Currently sold View sourceSeptember 7, 2026
WHOOP MG Band $359 for the first year with WHOOP Life Rechargeable; 14+ days 27.3 g with band None Required WHOOP Life membership Sleep, strain, recovery, HR, HRV, skin temperature, on-demand ECG and blood pressure insights; cycle tracking Currently sold View sourceNovember 12, 2026
Withings ScanWatch 2 Watch From $369.95 Rechargeable; up to 35 days 34.6 g without strap (38 mm) Analog dial plus small grayscale display None; Withings+ optional Activity, sleep, HR, ECG, SpO₂ and temperature; cycle tracking Currently sold View sourceAugust 20, 2026
Xiaomi Smart Band 10 Band $52.99 to $54.99 Rechargeable; up to 21 days 15.95 g without strap (23.05 g ceramic) 1.72-inch AMOLED touchscreen None Activity, sleep, HR, SpO₂, stress and 150+ sport modes; cycle tracking Currently sold View sourceAugust 20, 2026

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Wearables comparison chart: smart rings, fitness trackers and smartwatches

Wearable Finder plots 14 smart rings, 21 fitness bands, 6 smartwatches and 5 other trackers on one chart. Compare them by price against battery life, weight, thickness or case volume, narrow the list with the sliders, tick the tracking you need (heart rate, sleep, temperature, cycle tracking) and choose where you want to wear it. Hover a photo for its specs, or open its full comparison with Chargerless Ray.

Compare smart rings

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How the comparison works

Prices are snapshots from the linked sources. The price axis uses listed US prices, or the first year for WHOOP; where a model comes at several prices, it sits at the middle of the range. Battery points use published upper estimates for the device and about 60 days of dark reserve for Ray. Usage and test conditions vary. Weight points use the lightest listed configuration. Thickness and case volume use published case dimensions without the strap, in the smallest listed size; a ring's volume is the band itself at US size 10. A missing number leaves a device off that chart axis, while its full specs stay in the table.

Common questions

What does this chart cover?
14 smart rings, 21 fitness bands, 6 smartwatches and 5 other trackers, including 11 that are discontinued or not currently on sale and kept for reference. Each one is plotted by price against battery life, weight, thickness or case volume.
Which fitness trackers and smart rings work without a subscription?
26 of the currently sold wearables here list no required subscription: Chargerless Ray, Amazfit Band 7, Amazfit Helio Ring, Amazfit Helio Strap, Apple Watch Series 11, Garmin CIRQA, Garmin Index Sleep Monitor, Garmin Lily 2, Garmin vívosmart 5, Google Fitbit Air, Google Pixel Watch 4, HUAWEI Band 10, Hume Band, Luna Band, Luna Ring 2.0, Morpheus M7, Polar Loop, RingConn Gen 2, RingConn Gen 2 Air, RingConn Gen 3, Samsung Galaxy Ring, Samsung Galaxy Watch8, Ultrahuman Ring AIR, Ultrahuman Ring PRO, Withings ScanWatch 2 and Xiaomi Smart Band 10. The specs table shows each maker's membership terms.
How is battery life compared?
Battery points use each maker's published upper estimate, and about 60 days of dark reserve for Chargerless Ray, which also tops up from light. Real runtime varies with settings and use.
How are thickness and volume measured?
From published case dimensions without the strap, in the smallest listed size. A ring's volume is the band itself at US size 10.
Where do the prices come from?
Prices are snapshots of listed US starting prices from the sources linked in the specs table. WHOOP shows its first year of membership.