Oura Ring 4 vs Ultrahuman Ring AIR

What 4 does better (1) and where Ring AIR wins (1) — every spec side by side.

Oura Ring · 20244

8.2Score

1 advantage≈ $210

Ultrahuman · 2024Ring AIR

9.4Score

1 advantage≈ $180

Higher score

3.8Health tracking9.1

7.2Build & durability9.5

Why is 4 better than Ring AIR?

Specifications

Only differences	Oura Ring 4≈ $2108.2	Ultrahuman Ring AIR≈ $1809.4
Design & durability
Weight	3 g	2.4 g
Water resistance	10 ATM	10 ATM
Water rating (maker)	10 atm / 100 m	10 atm / 100 m
Battery
Battery life (smartwatch mode)	7 days	6 days
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
ECG	Yes	—
Skin temperature	—	Yes
Sensors	SpO2, accelerometer	heart rate, SpO2, accelerometer