Colmi R12 vs Colmi RING 2

What R12 does better (0) and where RING 2 wins (2) — every spec side by side.

Colmi · 2025R12

3.7Score

0 advantages≈ $40

Higher score

Colmi · 2026RING 2

2 advantages≈ $40

4.1Health tracking4.1

Why is R12 better than RING 2?

R12 has no measurable advantages in this pair.

Specifications

Only differences	Colmi R12≈ $403.7	Colmi RING 2≈ $40
Design & durability
Weight	4.7 g	—
Water resistance	1 ATM	5 ATM
Water rating (maker)	1 atm / 10 m	5 atm / 50 m
Colours	Black	Black
Battery
Battery life (smartwatch mode)	5 days	6 days
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
Sensors	heart rate, SpO2	heart rate, SpO2