RingConn Gen 2 Air

If you want discreet, all-day health tracking without a smartwatch, this smart ring is aimed at people who prioritise sleep data, SpO₂ monitoring and long battery life over detailed sports telemetry. Search terms you'll use are likely "smart ring", "sleep tracker", "SpO2" and "heart rate ring" — RingConn Gen 2 Air is built around those needs and keeps your finger free of bulk. ## What makes it worth it RingConn Gen 2 Air stands out because it's extremely light and low-profile (2.5g weight, ~2mm profile) so you barely notice it while sleeping or exercising, and the company emphasises comfort with a separate sizing kit to get fit right. Its battery life is genuinely class-leading for affordable rings — RingConn quotes up to 10 days per charge and a 90-minute full charge — which beats many mainstream competitors. The ring bundles continuous heart-rate monitoring, SpO₂, skin temperature, sleep staging, stress estimates and activity tracking, and RingConn pairs those sensors with on-device AI reports and no recurring subscription, giving useful daily insights without a monthly cost. ## Where it falls short Reviews note this is an entry-level smart ring: while sleep and passive vitals tracking are strong, the Gen 2 Air is not as precise for detailed workout metrics or advanced recovery/readiness scores compared with premium alternatives or dedicated sports watches, so don’t buy it as a substitute for a multisport GPS watch if you need exact workout data. If you want a lightweight, low-maintenance ring for accurate sleep, SpO₂ and all-day vitals monitoring without a subscription, buy the Gen 2 Air; if you need best-in-class sports tracking or clinical-grade measurements, look at full-featured sports watches or premium smart rings instead.

£239