Yes, you can put any strap on any Wyze Watch 47.
The bright, new straps and aluminum body for Wyze Watch 47c can be mixed and matched any way you want. All of the straps fit every Wyze Watch body, so you can pair a strap from the Rainbow watch with the body from a Space Blue watch.
While they are interchangeable, the straps are not sold separately and must be purchased with a watch.