Models & purchase packages
Smart rings
Compare 5 documented US purchase options. Open a model for specifications, package details and sources.
What this catalogue covers
Health-tracking smart rings sold new in the US with their included charger. Payment-only rings, NFC rings, fitness bands, smartwatches and measured accuracy, sleep or battery rankings are outside this catalogue.
Only verified matching values pass the filters. A missing value is not a confirmed no or zero.
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US purchase option
Oura Ring 4; Silver finish; size 4 to 15 chosen by the buyer; Select your size route, not the Free Sizing Kit route; included one-year protection plan only; no prepaid membership
A titanium ring for iOS and Android with red, infrared and green LEDs, a temperature sensor and an accelerometer, rated for 5 to 8 days in Oura's tests on sizes 8 to 10; most insights need an Oura Membership.
- Longest stated ring battery life
- 8 days
- Water rating
- Water resistant up to 100 m (328 ft). Oura does not recommend scuba diving or more than 12 hours submerged, and says it is not suitable for diving.
- Core features without a subscription
- No
No community reviews yet.
US purchase option
Galaxy Ring; Titanium Black; size 5 to 15 chosen by the buyer; model code by size, SM-Q505NZKAXAR to SM-Q509NZKAXAR for sizes 5 to 9, SM-Q500NZKAXAR to SM-Q503NZKAXAR for sizes 10 to 13, SM-Q514NZKAXAR and SM-Q515NZKAXAR for 14 and 15; not the sizing-kit-first order
A titanium ring for Android phones with an accelerometer, optical heart rate sensor and skin temperature sensor, a charging case with its own battery and up to 6 or 7 days by size, with no subscription stated.
- Longest stated ring battery life
- 7 days
- Water rating
- Consistent with 10ATM (up to 100 m of water for up to 10 minutes) and IP68 (up to 6 feet of water for up to 30 minutes); rinse and dry after use.
- Core features without a subscription
- Yes
No community reviews yet.
US purchase option
RingConn Gen 2; Matte Black; size 6 to 14 chosen by the buyer with I know my size; not the Free Sizing Kit route; no trade-in
A 2 mm titanium ring for iOS and Android with a size-specific wireless charging case, sleep apnea monitoring and up to 10 to 12 days of battery by size, sold without a subscription.
- Longest stated ring battery life
- 12 days
- Water rating
- IP68 (100 m/328 ft).
- Core features without a subscription
- Yes
No community reviews yet.
US purchase option
Ring PRO with PRO charging case; Aster Black; size 5 to 14 chosen by the buyer with I know my ring size; no trade-in; no Ultrahuman Max plan or UltrahumanX coverage
A titanium unibody ring with temperature, PPG and 6-axis motion sensors, up to 15 days per charge and a PRO Charger case with its own battery; no subscription for core data, with some paid PowerPlugs.
- Longest stated ring battery life
- 15 days
- Water rating
- Water resistant to 100 m (328 ft).
- Core features without a subscription
- Yes
No community reviews yet.
US purchase option
Circular Ring 2; Obsidian Black; US size 6 to 14 chosen by the buyer with I know my size; no replica-ring sizing kit, extra charger case, extension cable or Circular+ Guarantee
A titanium ring for iOS and Android with ECG, PPG, temperature and motion sensors, about 8 days per charge in power mode and a wireless charging case; core features come without a mandatory subscription.
- Longest stated ring battery life
- 8 days
- Water rating
- IP68; Circular says showers, swimming and daily wear are fine.
- Core features without a subscription
- Yes