

ColmiSmart ring
Colmi R03
Colmi R03 is a smart ring released in 2024. Key specs: battery life (smartwatch mode) 7 days, water resistance 5 ATM, weight 4.7 g.
4.8Score
Health tracking3.8
Build & durability3.3
price range$25–35Reference price converted from EUR
- Year
- 2024
- Type
- Smart ring
- Brand
Colmi- Popularity
- #93 of 796
- Model numbers
- Colmi R03
7 daysBattery life (smartwatch mode)
5 ATMWater resistance
4.7 gWeight
Spec guide
How it ranks among smart rings of 2024
Battery life (smartwatch mode) · 7 daysBottom 34%Water resistance · 5 ATMBottom 47%Weight · 4.7 gTop 5%
Compared with smart rings released in 2024. Bars show the share of models it beats.
Specifications
Full specifications
Design & durability
- Weight
- 4.7 g
- Water resistance
- 5 ATM
- Water rating (maker)
- 5 atm / 50 m
Battery
- Battery life (smartwatch mode)
- 7 days
Health sensors
- Optical heart rate
- Yes
- Blood oxygen (SpO2)
- Yes
- Sensors
- heart rate, SpO2, accelerometer
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.











