Bands for 38mm, 40mm and 41mm scenarios are appropriate with one another, and bands for 42mm, 44mm and 45mm circumstances are suitable with each other. There are two buttons to release the 2 sides of your watch band. These buttons can be found about the back with the watch, centered https://allhealthmarket.com/product/aeahmarket/appleband/apple-stainless-steel/38-44-stainless-steel-loop-band-for-apple-watch-band-strap-38mm-42mm-for-iwatch-se-6-5-4-3-2-1-40mm-44mm-bracelet-wrist-watchband/