Hama Smart Ring ONE vs Nextring N2

What Smart Ring ONE does better (0) and where N2 wins (1) — every spec side by side.

0 advantages≈ $110

Nextring · 2025N2

7.0Score

1 advantage≈ $210

Higher score

4.1Health tracking8.8

Why is Smart Ring ONE better than N2?

Smart Ring ONE has no measurable advantages in this pair.

Specifications

Only differences	Hama Smart Ring ONE≈ $110	Nextring N2≈ $2107.0
Design & durability
Weight	—	3 g
Water resistance	5 ATM	5 ATM
Water rating (maker)	5 atm	5 atm / 50 m
Battery
Battery life (smartwatch mode)	4 days	14 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, accelerometer