ARF - Almost Ready to Fly
Compare a Basic set the ARF MikroKopter is a completely configured, adjusted and tested copter.
This copters are assembled with sturdier materials and a GPS-System. Also include are a variety of accessories.
So you have here a very light, powerfull, very stable and reliable copter. This is also perfect to use for commercial use.
More information about each model can be found here: