New Delhi, Dec. 12 -- Smart rings are winning over people who want health tracking without the bulk of a watch, especially at night. They sit quietly on a finger, collect sleep and recovery data, and usually last longer on a charge than most smartwatches. For anyone choosing a first smart ring, the decision comes down to a handful of practical questions, not hype. Some rings are also moving into more specialised territory. RingConn Gen 2, for example, can flag possible signs of sleep apnoea, while a few models add heart health tools like ECG and atrial fibrillation alerts. Most people will not use half the metrics on day one, so it helps to choose a ring based on what will actually get worn.

Below is a simple way to pick a smart ring tha...