Colmi R03 vs Colmi R10

What R03 does better (1) and where R10 wins (1) — every spec side by side.

Colmi · 2024R03

4.8Score

1 advantage≈ $30

Colmi · 2026R10

7.4Score

1 advantage≈ $35

Higher score

3.8Health tracking5.9

3.3Build & durability5.9

Why is R03 better than R10?

Specifications

Only differences	Colmi R03≈ $304.8	Colmi R10≈ $357.4
Design & durability
Weight	4.7 g	2.7 g
Water resistance	5 ATM	5 ATM
Water rating (maker)	5 atm / 50 m	5 atm / 50 m
Battery
Battery life (smartwatch mode)	7 days	4 days
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
ECG	—	Yes
Skin temperature	—	Yes
Sensors	heart rate, SpO2, accelerometer	heart rate, SpO2, accelerometer