Ultrahuman Our pick
Ring PRO
Aster Black finish, whole sizes 5 to 14, with PRO Charging Case
Subscription-free titanium ring with its charging case included
FIND WHAT FITS
Picks from the Sleep & recovery wearables buying guide come first, then every other review that fits your budget and space.
Sleep & recovery wearables
Ultrahuman Our pick
Aster Black finish, whole sizes 5 to 14, with PRO Charging Case
Subscription-free titanium ring with its charging case included
Oura Our pick
Silver finish, whole sizes 6 to 13 chosen with the Ring 5 sizing kit, plus Oura Membership
Compact titanium sleep ring that needs a paid membership
Garmin Our pick
Black, part 010-04675-00, wrist band (a retailer lists this part as L/XL)
Garmin's screen-free band with no required subscription and up to 10 days per charge
Apple Our pick
42mm aluminum case, GPS (no cellular), with a Sport Band
Full iPhone smartwatch with sleep and hypertension alerts, charged most days
Garmin
Index Sleep Monitor armband, L/XL size (S-M also sold)
Upper-arm sleep band for people who won't wear a watch or ring to bed
Classic edition with the Obsidian band, including 3 months of Google Health Premium
Screen-free $99.99 fitness band with up to 7 days of battery
Oura
Silver finish, plus Oura Membership billed separately
Oura's previous-generation smart ring, with the membership billed separately
Polar
Night Black with the SoftWeave Textile band (S–L)
Screen-free band with sleep and recovery scores and no subscription
RingConn
Galaxy Silver, sizes 6 to 14 (or 'Don't know my size' with the free sizing kit), charging dock included
Subscription-free $199 smart ring with up to 10 days of battery
RingConn
Matte Black finish, sizes 6 to 15 (or 'Don't know my size' with the free Gen 3 sizing kit), charging case included
Subscription-free sleep and recovery ring with up to 14 days of battery
Samsung
Titanium Black, sizes 5 to 15 (Titanium Silver and Titanium Gold also listed)
Titanium sleep ring with no listed subscription, for Samsung Galaxy phone owners
Samsung
40mm, Bluetooth (no LTE), Graphite
Android smartwatch with an FDA-authorized sleep apnea alert and ECG app