Ultrahuman Ring PRO review

Ultrahuman Ring PRO is built around battery and storage. The unibody titanium ring is rated for up to 15 days in Chill Mode and about 12 in Turbo Mode, holds up to 250 days of data, and ships with a PRO charging case that Ultrahuman says adds up to 45 days of battery and a year of storage. For sleep, the Sleep Index rolls duration, resting heart rate, restfulness and REM, deep and light sleep into one metric, and Stress Rhythm reads heart rate and HRV against your circadian rhythm. Ultrahuman's PowerPlugs add free tools that suit sleepers: a Smart Alarm that wakes you in light sleep, Shift Work and Social Jetlag modes, and a Caffeine Window. An AFib Detection PowerPlug watches heart rhythm overnight, though some PowerPlugs are paid. There are no recurring fees for basic data. At $479 it costs the most here, and the slightly cheaper Ring AIR is listed alongside it.

Who it is for

People who want the longest battery of any ring here and free sleep add-ons such as a smart alarm and shift work mode.

Price

$479 with the PRO charging case at Ultrahuman's US store; no recurring fee for ring data.

Ring PRO (with PRO charging case) $ 479
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Sleep Index with sleep duration, resting heart rate, restfulness and REM, deep and light stages
• Stress Rhythm from heart rate, HRV and resting heart rate against your circadian rhythm
• Free Smart Alarm, Shift Work, Social Jetlag and Caffeine Window PowerPlugs
• AFib Detection PowerPlug that monitors heart rhythm every night
• PRO Charger with up to 45 days of battery and up to a year of data storage

Strengths and weaknesses

• Strength: Up to 15 days per charge, about 12 days in Turbo Mode
• Strength: No recurring subscription fees to access your data
• Strength: HSA/FSA eligible, with pickup at Best Buy in the US
• Weakness: Most expensive ring on the list at $479
• Weakness: Some advanced PowerPlugs cost extra
• Weakness: Ultrahuman ring sizes may differ slightly from US sizes, with no half sizes

Key facts

• Price: $479 with PRO charging case
• Battery: Up to 15 days
• Size: 2.65mm thick, 3.3 to 4.8g
• Water: 100m
• Sizes: 5 to 14

Where it ranks

Ultrahuman Ring PRO is No. 5 in our Best Smart Rings verdict.