Compatible with Fitbit Versa 4/ Fitbit Sense 2. Fits 5.5-8.1 inch wrists The diamonds on the versa 4 watch bands are like fireworks under the stars, and the blingbling light shines brightly, melting your girl's heart in an instant, let you exude a unique charm in your gestures High-performance metal, Comfortable to wear, no fading. Making it a great gift for fitbit versa 4 lovers. Stylish chain with push-button drawstring style lock, not only looks great but allows for easy sizing adjustment; No tools needed Comes with a bling bumper case, adds an extra protection and a fancy look to your Fitbit Versa 4/ Sense 2