Colmi R10 vs Oura Ring 4 Ceramic

What R10 does better (1) and where 4 Ceramic wins (2) — every spec side by side.

Colmi · 2026R10

7.4Score

1 advantage≈ $35

Oura Ring · 20254 Ceramic

8.2Score

2 advantages≈ $250

Higher score

5.9Health tracking3.8

5.9Build & durability7.2

Why is R10 better than 4 Ceramic?

Specifications

Only differences	Colmi R10≈ $357.4	Oura Ring 4 Ceramic≈ $2508.2
Design & durability
Weight	2.7 g	3 g
Water resistance	5 ATM	10 ATM
Water rating (maker)	5 atm / 50 m	10 atm / 100 m
Battery
Battery life (smartwatch mode)	4 days	8 days
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
ECG	Yes	Yes
Skin temperature	Yes	—
Sensors	heart rate, SpO2, accelerometer	SpO2, accelerometer