Watch Band Change?

This might interest you....https://www.amazon.com/s?k=first+generation+apple+watch+bands&gclid=CjwKCAjwscDpBRBnEiwAnQ0HQOqgKZnPxotHv4upawGSu96WJBvmRGHc9FAmKMbHSxDhq9tYlsQO-xoCX_IQAvD_BwE&hvadid=232530857969&hvdev=c&hvlocphy=9003451&hvnetw=g&hvpos=1t1&hvqmt=e&hvrand=5407198203111908245&hvtargid=kwd-386468765737&hydadcr=20031_9686986&tag=googhydr-20&ref=pd_sl_10zln2nu1u_e

Also, a visit to an Apple store, if possible, would be helpful.

Depends on the size of your watch case. Take a look at this image, it should help.

Any 44mm band will work with your Watch.