Compatibility: Fitbit Versa 3 / 4 - Sense 1 / 2.
Material: Stainless steel metal Fitbit band.
Band Length: Fully adjustable to fit any wrist.
After understanding how to shorten the band length and some help from a jeweler on how to shorten it slightly, I am very pleased with how it works and the comfort it brings when wearing my Fitbit. Great band.