logo gift 1,NW/GW: 305g/400g 3,Hight: 22cm 4,laser marking ... from solar energy, no need other power,100% green product.2. Material is stainless steel and high quality aviation aluminum alloy3 ... :400/305g Material : aluminium alloy and steel ; Propellers material: plastic;Model can circle around the pole and at the same time ... any battery.A good gift , especially can DIY. Solar airplane model