Samsung Galaxy Ring vs Ultrahuman Ring AIR

Ring AIR is Ultrahuman’s second-generation ring, which its 11 June 2024 FAQ pitched as R1 made thinner and lighter, with the same features and battery. Galaxy Ring comes at the job from the phone side: it’s Samsung’s ring for people who already keep their health data in Samsung Health.

Galaxy Ring and AIR side by side

Spec	Samsung Galaxy Ring	Ultrahuman Ring AIR
US price	$399.99	$349 on Ultrahuman’s PRO and AIR comparison
Phone	Samsung Galaxy phone with a Samsung account	iPhone or Android, through the Ultrahuman app
Membership	None	None for core data
Battery	Up to 6 or 7 days, by size	4–6 days
Charging	In the included case, about 80 or 90 minutes	Open wireless pad, about 180 minutes from empty
Spare charge	Case refills the ring up to 1.6 times	No case
On-ring storage	Not published	4 days
Sizes	5–15	5–14
Thickness	2.6 mm	2.45 mm (2024 FAQ); 2.4 mm (current comparison)
Width	7 mm	Not published
Weight	2.3–3.2 g, by size	2.4 g
Material	Titanium	Titanium with PVD and a plastic inner; tungsten-carbide coating in the 2024 FAQ
Water	10 ATM and IP68	100 m (328 ft)
Sensors	Optical heart rate, skin temperature, accelerometer	PPG, temperature, 6-axis motion sensor
Finishes	Titanium Black, Silver, Gold	Raw Titanium, Aster Black, Matte Grey, Bionic Gold, Space Silver

Your phone decides most of it

Galaxy Ring runs through Samsung Health and Galaxy Wearable, and only on a Galaxy phone. What you get for that lock-in is Samsung’s own tracking: Energy Score, which rolls your sleep, activity and heart rate into one number; sleep analysis from heart rate, blood oxygen and skin temperature; and snore detection. With a phone on One UI 6.1.1 or higher, a double pinch dismisses an alarm or takes a photo, unless a Galaxy Watch with gestures turned on is also paired, in which case the watch takes over. Samsung adds no membership on its US pages, but read its terms before you assume every feature stays free.

Ring AIR works with the Ultrahuman app on iPhone or Android, though Ultrahuman doesn’t list the minimum phone or OS versions. It tracks sleep and recovery with a PPG heart sensor, a temperature sensor and a 6-axis motion sensor on a single-core chip, and Ultrahuman says its ring features in the app match R1’s. It has no GPS. Ultrahuman’s current FAQ says core data carries no recurring fee; that line sits on the Ring PRO page, so confirm it wherever you buy AIR.

A charging case against an open pad

Samsung has described Galaxy Ring’s battery three ways. Its introduction to the ring says up to 7 days and about 80 minutes to charge, with an 18mAh cell in size 5 and 23.5mAh in size 13. Its charging guide lists 17, 18.5 and 22.5mAh batteries, gives sizes 5 to 11 up to 6 days and sizes 12 to 15 up to 7, and says a charge takes about 90 minutes. The fine print on its US store page gives 7 days only to sizes 12 and 13, and 6 to smaller sizes. Unless you wear a 12 or bigger, plan on 6 days.

Where Galaxy Ring pulls ahead is the case. It comes in the box, sized to your ring, and Samsung says a full case can recharge the ring to 100 percent up to 1.6 times; its marketing counts ring and case together as up to 14 days away from a wall socket. If the ring ever runs completely flat, give it ten minutes on the charger before expecting a response.

AIR has no case. Ultrahuman rates it for 4 to 6 days, and it goes back on an open wireless pad for about 180 minutes from empty to full, so the pad travels with you. If you came to Ultrahuman for a 15-day battery, that’s Ring PRO, not AIR.

AIR is thinner, but not always lighter

Galaxy Ring is 2.6 millimeters thick and 7 millimeters wide. Ultrahuman puts AIR at 2.45 millimeters in the 2024 FAQ and 2.4 millimeters on its current comparison table, a 0.05-millimeter disagreement, and gives no width. Either figure makes AIR the slimmer ring.

Weight is closer than the pitch suggests. AIR’s single figure, 2.4 grams, sits inside Galaxy Ring’s range of 2.3 to 3.2 grams, so the smallest Galaxy Ring is a hair lighter and the largest is nearly a gram heavier.

Galaxy Ring runs from size 5 to 15 and AIR from 5 to 14, so a size 15 means Samsung. Samsung says to wear a sample from its sizing kit for more than 24 hours; its sizing video shows samples from 5 to 13, while its sizing article says the kit includes every available size. Ultrahuman’s sizes don’t line up with Oura’s, but an R1 sizing kit works for AIR.

Both rings are titanium. Galaxy Ring comes in Titanium Black, Silver and Gold. AIR has a PVD finish and a hypoallergenic plastic inner on Ultrahuman’s current comparison, while the 2024 FAQ describes a tungsten-carbide coating instead, and it comes in Raw Titanium, Aster Black, Matte Grey, Bionic Gold and Space Silver.

Water, the gym and health limits

Both are rated for water down to 100 meters, but the details differ. Samsung rates Galaxy Ring at 10 ATM and IP68 and spells those out as up to 100 meters for 10 minutes and up to 6 feet for 30 minutes; rinse it after salt water or chlorine. Ultrahuman rates AIR to 100 meters (328 feet), names swimming, showering and scuba diving, and asks you not to keep it underwater for more than 30 minutes at a stretch. Only Ultrahuman mentions scuba.

Ultrahuman also advises against wearing AIR for heavy weight training, because of contact with metal. Galaxy Ring’s cycle tracking isn’t meant for contraception or for anyone under 18. If you need a ring sold as a medical device, skip both.

Price and stock

On the morning of 19 September 2026, Samsung’s US store listed Galaxy Ring at $399.99 with Silver still available; by evening, Black, Gold and Silver all showed out of stock. The $150 instant trade-in credit on the page that evening is a promotion, not the ring’s price.

AIR’s $349 comes from the PRO and AIR comparison on Ultrahuman’s US Ring PRO page that same day. Ultrahuman’s own US page for AIR was opening Ring PRO instead, so a new AIR may take some hunting in the US. Stock and prices move, so check both stores before you buy.