Oura Ring 4 vs Pi Ring Halo Ring Plus
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General
| Brand | Oura | Pi Ring |
| Model Name | Ring 4 | Halo Ring Plus |
| Ideal For | Men, Women | Men, Women |
| Sales Package | Smart Ring, Charger, User Manual |
Design and Body
| Material | Titanium | Microcrystalline Nano Ceramic |
| Shape | Circle | Circle |
| Water Resistant | Yes | Yes |
| Water Resistant Depth | 100 m | 50 m |
| Water Resistant Certificate | 10ATM, IP68 | |
| Dust Proof | Yes |
Memory
| RAM | 512 KB | |
| Inbuilt Memory | 8 MB |
Connectivity
| Bluetooth | Yes, 5.4 |
Extra
| Gesture Control | Yes, Camera Control, Music Control, E-Book Page Switch |
Technical
| Compatible OS | Android, iOS |
Battery
| Battery Capacity | 18 mAh | |
| Removable Battery | Non-Removable Battery | |
| Battery Backup | 7 days | |
| Fast Charging | Yes |
Fitness Features and Sensors
| Heart Rate Monitor | Yes | Yes |
| SpO2 (Blood Oxygen) Monitor | Yes | Yes |
| BP Monitor | Yes | |
| Temperature Sensor | Yes | Yes |
| Pedometer | Yes | Yes |
| Altimeter | Yes | |
| Sleep Monitor | Yes | Yes |
| Meters and Sensors | Accelerometer, Calorie Count, Step Count | Calorie Count, Step Count, Touch Sensor |
| Extra Features | Menstrual Cycle |
Warranty
| Warranty | 1 year, Warranty on Product |
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