- idk.dev
- Smartwatches
- Oura Ring
- 4 Ceramic
Oura RingSmart ring
Oura Ring 4 Ceramic
Oura Ring 4 Ceramic is a smart ring released in 2025. Key specs: battery life (smartwatch mode) 8 days, water resistance 10 ATM, weight 3 g.
8.2Score
Health tracking3.8
Build & durability7.2
price range$220–275Reference price converted from EUR
- Year
- 2025
- Type
- Smart ring
- Brand
Oura Ring- Popularity
- #61 of 796
- Model numbers
- Oura Ring 4 Ceramic
8 daysBattery life (smartwatch mode)
10 ATMWater resistance
3 gWeight
Spec guide
How it ranks among smart rings of 2025
Compared with smart rings released in 2025. Bars show the share of models it beats.
compared with other smart rings
Why is 4 Ceramic a good choice?
Water resistance: 10 ATMbetter than 77% of smart rings
Specifications
Full specifications
Design & durability
- Weight
- 3 g
- Water resistance
- 10 ATM
- Water rating (maker)
- 10 atm / 100 m
Battery
- Battery life (smartwatch mode)
- 8 days
Health sensors
- Optical heart rate
- Yes
- Blood oxygen (SpO2)
- Yes
- ECG
- Yes
- Sensors
- SpO2, accelerometer
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.
In collections
Smart rings: Water resistance from 10 ATM8Smart rings: Battery life (smartwatch mode) from 7 days13Smartwatches: Water resistance from 10 ATM + ECG67Smartwatches: Battery life (smartwatch mode) from 7 days + ECG115Smartwatches: Water resistance from 10 ATM156Smartwatches: ECG209Smartwatches: Battery life (smartwatch mode) from 7 days384
