Compatibility: Our durable rugged band with bumper case is compatible with Fitbit Versa 4, Fitbit Sense 2, Fitbit Versa 3, Fitbit Versa 2, Fitbit Versa, Fitbit Versa Lite, and Fitbit Sense Smartwatch. (Watch not included) All-around Protections: Flexible but durable TPU provides all-around shock resistance. Raised bezels around the screen for extra screen protection. All Functions Accessible: Smooth access to all the functions of the watch with precise cutouts for buttons and crown. No need to remove the case bumper, free charging without interference. Adjustable Length: Rugged design with an adjustable band and a durable metal clasp. Fits wrists from 6.5 inches to 9.5 inches. Easy On/Remove: Snap-on type for a quick and easy installation, no worries about falling out. Dimensions: 3.43 x 2.68 x 1.85 inches.