Colmi RING 2 vs IMIKI Smart Ring

What RING 2 does better (1) and where Smart Ring wins (0) — every spec side by side.

Colmi · 2026RING 2

1 advantage≈ $40

IMIKI · 2025Smart Ring

0 advantages≈ $55

4.1Health tracking7.4

Why is RING 2 better than Smart Ring?

Smart Ring has no measurable advantages in this pair.

Specifications

Only differences	Colmi RING 2≈ $40	IMIKI Smart Ring≈ $55
Design & durability
Water resistance	5 ATM	5 ATM
Water rating (maker)	5 atm / 50 m	5 atm / 50 m
Colours	Black	Black
Battery
Battery life (smartwatch mode)	6 days	5 days
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
Skin temperature	—	Yes
HRV tracking	—	Yes
Sensors	heart rate, SpO2	heart rate, SpO2