The third-generation Oura Ring Horizon — the one that’s more round — is down to $299 ($50 off) at Amazon and Best Buy in silver and black, which is only a few dollars more than the lowest price to date. That brings its price in line with the MSRP of the squared-off “Heritage” version and $50 cheaper than the Oura Ring 4 we just reviewed.
Besides ditching the flat-top design, the Oura Ring 3 Horizon otherwise offers the same vital-tracking experience as the original. It has seven temperature sensors, a blood oxygen-monitoring SpO2 sensor, and a green LED optical heart rate monitor.
Those sensors work in tandem to enable a growing suite of sleep tracking metrics, offering an easily digestible glimpse into the quality of all your slumber…