Specification: 1.Power: Brushless motor Cat 2.Hull weight:800g 3.Hull size: 800mm x 245mm x 115mm 4.Carton size: 98* 32* 83CM 5.Boat G.W: 5KG 6.Propeller: One motor's Prop. Dia.=35, Two motors' Prop. Dia.=30mm 7.One 540 3660KV motor 125A ESC or TWO 380 2858kv motors 70A ESC 8.Suggest Battery:3300mah 11.1v 20c or 11.1V 2200MAH 20C Li-Po battery 9.The best Speed:One motor: 60KM/H .Two motors: 100KM/H 10. Material: Fiberglass. Carton size: 98* 32* 83CM Boat G.W: 5KG.