They say size doesn't matter, but when it comes to smart rings, too small or too large can lead to discomfort and/or unreliable health data. The best way to ensure perfect sizing for your smart ring ...

I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen Best laptop cooling pads Best flip ...

We may receive a commission on purchases made from links. Smart rings have grown in popularity as a way for users to get high-end fitness tracking in a subtle and sleek device. Oura, in particular, ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Oura's new charging ...