Hello, I am planning on buying 2 aw. One a space grey sport aw. And a space black ss with link bracelet. I am getting the sports watch for my brother. Me and my brother are planning on getting extra bands. I have a question regarding the bands. Is there a difference in the rubber band for the sport and the rubber band for the ss aw? I think the ss band is advertised in black and white. My question is, is there a difference between the black rubber band in the 2 collections?