RingConn Gen 3 Smart Ring vs Circular Ring 2

Buy the RingConn Gen 3 if battery life and a proven, subscription-free tracker matter most: it runs 10–14 days, stores 10 days of data offline, and ships in sizes 6–15 with a case that fits every RingConn ring. Buy the Circular Ring 2 if you want ECG readings and an AI coach, and you accept roughly 5 days of real-world battery and a 30-minute charge. The RingConn is the safer everyday pick; the Circular is the more experimental one, and its blood pressure and glucose features are still promised rather than shipped.

• Choose the RingConn Gen 3 if you want the longest battery life, the widest size range and a ring that keeps recording when it is away from your phone.
• Choose the Circular Ring 2 if ECG readings and an AI health coach are what you are after, and charging every few days is fine.