Forbes May 16, 2025
Smart rings are all the rage, at least among a subset of the techy fandom, and the latest Oura-a-like comes from a more traditional name in tech, with the Acer FreeSense Ring.
This ring has a titanium alloy outer shell, and weighs just 2-3g depending on the size chosen. It’s available in ring sizes 7-13.
As with other rings in this class, the majority of its stats are derived from optical heart rate reader hardware, which is notably hidden in Acer’s rendered images. This hardware, of course, can measure your heart rate. And through this it can derive heart rate variability and, thanks to the use of a red LED in the sensor array, blood oxygenation.
It will also monitor...
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