Thanks! That is all the info I need in a nutshell. And by removable controller, I mean the display unit. On my BH Atom Diamond Wave Pro, it just slips off so when you go into a store or wherever, you can just slip the controller into your pocket and even if a thief were to chop your lock, without the controller, it's just a very heavy bike. On my husband's Vado 2, the controller is not removable, and it got scratched when he turned the bike over to work on it. He learned his lesson, but having a removable controller is a nice feature. He's looking to upgrade, mainly to get past the 20mph assist wall.