The 3M company has a product called 3M™ Precise™ Mouse Pad with Repositionable Adhesive Backing and Battery Saving Design, MP200PS that claims to:
Battery saving design extends battery life of wireless mice up to 50%†
Precise™ surface enhances the precision of optical mice at fast speeds
† footnoting symbol is not resolved on that page, so it is unclear what the fine print is.
Does this mouse pad really give you up to 50% longer battery life? If so, does it have to do with the pattern on the board, or is it just that the surface is light and reflective? If only color, would any light mouse pad have that effect? Does the pattern on the surface just help with tracking precision?
I see another claiming up to 75%? Do they have products with different performance, or just competing marketing claims for the same technology? Perhaps their attorneys told them to back down to 50% in their claims in the U.S., but leave it alone outside U.S.?