If you’ve been eyeing this sleek and minimalist fitness tracker, act fast—this limited-time Prime Day deal won’t last long.

For the first time ever, Oura Ring is marking down its latest iteration, the Oura Ring 4, for Prime Day. Men’s Health is pointing out this deal so you can score our favorite smart ring at a discounted price. Oura Ring is doing a 15% discount on their brand new tech across the board, which means you can score your colorway of choice.

Get 15% off the Oura Ring 3 and Oura Ring 4 (newest model) during the final day of Prime Day today, in all shades and sizes.