LUNA RING GEN 2

It's cheaper than some rivals, but does this smart ring require compromises?

- Words Leon Poultney

With its chic case, the Luna Ring Gen 2 certainly feels like a special delivery when it arrives. But it's bulkier than the Oura Ring 4 and Ultrahuman Ring Air on the following pages, with much of the electrical gubbins on the inside visible even when you're wearing it. That makes it slightly less comfortable to wear and can also be a distraction at night, as the LEDs of the optical heart-rate sensor flash on and off.