Circular Ring 2 vs Ultrahuman Ring Air
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General
| Brand | Circular | Ultrahuman |
| Model Name | Ring Air |
Design and Body
| Dimensions | [object Object] | |
| Material | Outer shell: Fighter jet grade Titanium reinforced with Tungsten Carbide Carbon coating, inners of the ring is coated with medical-grade hypoallergenic epoxy resin | |
| Shape | Circle | |
| Water Resistant | Yes | Yes |
| Water Resistant Depth | 100 m | |
| Water Resistant Certificate | IP68 |
Connectivity
| Bluetooth | Yes | Yes, Bluetooth Low Energy (BLE5) |
Extra
| Notifications | Yes | |
| Extra Features | Infrared Photoplethysmography (PPG) sensor, Non-contact medical-grade skin temperature sensor, 6-axis motion sensors, Red LEDs (heart rate monitoring and oxygen saturation), Green LEDs (heart rate monitoring) ,Infrared LEDs (heart rate monitoring) |
Technical
| Compatible OS | iOS and Android |
Battery
| Battery Capacity | 24 mAh | |
| Battery Type | LiPo | |
| Removable Battery | Non-Removable Battery | |
| Battery Backup | 8 days | 6 days |
Fitness Features and Sensors
| Heart Rate Monitor | Yes | Yes |
| SpO2 (Blood Oxygen) Monitor | Yes | Yes |
| Temperature Sensor | Yes | |
| Pedometer | Yes | |
| Sleep Monitor | Yes | |
| Meters and Sensors | Accelerometer, Calorie Count, Step Count | Calorie Count, Step Count, PPG Sensors, 6 Axis Motion |
| Extra Features | ECG and AFib Detection, Stress Monitoring |
Warranty
| Warranty | 1 year |
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