ColmiSmart ring
Colmi R12
Colmi R12 is a smart ring released in 2025. Key specs: battery life (smartwatch mode) 5 days, water resistance 1 ATM, weight 4.7 g.
3.7Score
Health tracking4.1
Build & durability2.2
price range$30–45Reference price converted from EUR
- Year
- 2025
- Type
- Smart ring
- Brand
Colmi- Popularity
- #100 of 891
- Model numbers
- Colmi R12 Black Size 9
5 daysBattery life (smartwatch mode)
1 ATMWater resistance
4.7 gWeight
Spec guide
How it ranks among smart rings of 2025
Battery life (smartwatch mode) · 5 daysBottom 15%Water resistance · 1 ATMBottom 1%Weight · 4.7 gTop 7%
Compared with smart rings released in 2025. Bars show the share of models it beats.
Specifications
Full specifications
Design & durability
- Weight
- 4.7 g
- Water resistance
- 1 ATM
- Water rating (maker)
- 1 atm / 10 m
- Colours
- Black
Battery
- Battery life (smartwatch mode)
- 5 days
Health sensors
- Optical heart rate
- Yes
- Blood oxygen (SpO2)
- Yes
- Sensors
- heart rate, SpO2
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.
