Package Contents: KIT + Motor + Speed ​​Controller (DIY Kit)Dimensions (L x H x W): 640x209x120 mmMain rotor diameter: 745mmTail rotor diameter: 156mmWeight: 800gEngine: OBL 29 / 37-10H, 3700rpm / B (brushless)Motor current regulator: BLC-40, 40 A, 7.4 - 14.8 V