Garmin accessory band that is compatible with: Approach S40, Forerunner 245, Forerunner 245 Music, Forerunner 645, Forerunner 645 Music, vivoactive 3, vivoactive 3 Music, and vivomove HR Simply remove the bands with a slide of the bar, and pop on different bands for the ultimate personal accessory Package dimensions: 5.5" L x 2.8" W x 1.1" H Country of Origin: TAIWAN, PROVINCE OF CHINA