We are very proud to introduce you the DFI Agency Kopter. It has stayed in air for 51min and 20sec. It was a brand new record! It was a very important mile stone for the Project 'Luftaufnahmen' since it has been started about one and a half year. Followings are some technology dates: net weight: 807g, take off weight: 1520g, akkus: 4X2200mAh, 3S, 11.1v, Uesed energy: 9276mAh, Eff.:12.6g/w !!! Special thanks to our Pilot and Engineer Yanan Li! My brother Dan, have you seen it?!