Details
Blue Velvet Pro is the supercharged offspring of Blue Velvet and Red Mist spray sealant, in other words, it's probably best classed as a wax/sealant hybrid. That means it's a dark coloured wax suitable for blacks, blues and other darker coloured paintwork - but it has boosted durability thanks to the sealant ingredients.
If you get, say, 2 to 3 months of protection from standard Blue Velvet, you'd be looking at about 3 to 5 months from the Pro version.
Whether you're stepping up from normal Blue Velvet, or just want a more durable wax from the off, this is a great choice.