Oura Ring 4 was launched in select global markets on Thursday. The smart ring comes with a redesigned titanium build and is available in six colourways. It is compatible with the Oura App and supports Bluetooth Low Energy (LE) connectivity. The smart wearable is offered twelve size options and ships with a size-specific charger. It is equipped with Smart Sensing technology which is claimed to help provide more accurate health and activity readings. Like competing health and fitness trackers, the Oura Ring 4 features heart rate and temperature sensors among many more. Oura Ring 4 Price and Availability Oura Ring 4 price starts at $349 (roughly Rs. 29,300) and comes in a range of 12 sizes between 4 to 15. The smart ring is offered in Black, Brushed Silver, Gold, Rose Gold, Silver, and Stealth colourways. According to the company, the ring is available for pre-order via select channels in the US, the UK and certain European countries and will begin shipping on October 15.  Oura Ring 4 Specifications, Features The Oura Ring 4 comes with a light, non-allergenic …