size  length: 3m diameter: 1.5m volume of blimp balloon: 3.60 m3  weight blimp balloon: 1.10kg( including rape) engine room: 1.3kg-1.45kg(including battery) empennage: 0.3kg gross weight:3.2kg available load: 0.30kg-0.50kg capability speed: 0-25km/h Minimum flying speed:0-5km/h sustaining flying time:1.5h  the best hight of flying for sight:2m-8m minimal diamater for turning around: 0m-2m distance of flying-off/landing:0m-2m standard equipment(according to the client requst)