It doesn't do anything more - it just has the belt drive, which is supposed to be quieter (though I was not bothered by any noise when I rode the +2), last longer than chain and be maintenance-free, and integrated lights (which I'm thinking will be another drain in the battery). People who love belt drives have me a bit spooked about chain maintenance and replacement

. That said, I'm probably going to go for the deal - I loved the bike when I rode it. The dealer even sent it over to the hilly town I live in for an extended test ride in the local area a few months ago... I'm figuring it's time to stop overthinking and start riding!