Circular Ring
By Ethan Halfhide · Updated
On-device haptic alarms and FDA-cleared ECG features
Circular Ring
Specifications
- Price
- $349
- Device type
- Smart Ring
- Ecosystems
- Alexa
- Rooms
- Bedroom
- Connectivity
- Bluetooth
- Hub required
- No
- Rental friendly
- No
- Matter certified
- No
- Installation
- Not listed
- Energy Star
- No
- Local control
- No
- Voice control
- No
About
Circular differentiates itself with on-device haptics, so the ring can vibrate to wake you inside a smart alarm window without involving your phone, plus an FDA-cleared ECG feature for atrial fibrillation detection. It tracks sleep stages, HRV, SpO2 and activity through an app that leans heavily on coaching prompts. It is a more experimental product than Oura, with a shorter data track record but a genuinely useful silent alarm.
Pros
- +Haptic silent alarms
- +ECG features
Cons
- −Newer platform
- −Mixed app reliability
How it compares
| Device | Price | Ecosystems | Matter | Hub required | Local control |
|---|---|---|---|---|---|
| Circular Ring | $349 | Alexa | No | No | No |
| Oura Ring 4 | $349 | Alexa | No | No | No |
| Ultrahuman Ring Air | $349 | Alexa | No | No | No |
| RingConn Gen 2 | $299 | Alexa | No | No | No |
About the author
Ethan Halfhide: Ethan Halfhide is a smart home enthusiast and AI technologist who follows the connected home market closely, from smart locks and security cameras to robot vacuums, lighting, sensors and hubs. He curates HomeGearLab's device directory, comparing products on published specs, compatibility, setup requirements and price so readers can pick gear that fits their home and works together.