Oura’s Ring 4 arrives a bit too late to India, a good four years after its global launch. It offers good activity tracking and excellent sleep tracking, but has a few flaws in terms of functionality. And there’s also the fact that a lot of its features are blocked behind a subscription plan. Our review explains why it functions better as a passive health tracker v…​Oura’s Ring 4 arrives a bit too late to India, a good four years after its global launch. It offers good activity tracking and excellent sleep tracking, but has a few flaws in terms of functionality. And there’s also the fact that a lot of its features are blocked behind a subscription plan. Our review explains why it functions better as a passive health tracker v…  ​ wearables