Resistance to fall off, PP board material and add EPP board from two side to enhance the protection for the plane head. Also add plastic bandage to double fix motor, wires and capacitance [Product name]: electric bird glider Product Specifications: 27*21*5CM [Packing method]: Blister card [Color box specifications]: 30*24.5*7.5CM [One box weight]: 99 grams [Material]: plastic + engineering synthetic material [Battery]: 3.7V100 mA [Accessories]: One bird, one USB charging cable [Charging time]: 20-25 minutes [Flight time]: 15*25 seconds, click once to fly for 15 seconds + 1 special effect action, press twice to fly for 20 seconds + 2 special effect actions, press three times to fly for 25 seconds + 3 special effect actions. Simple design with durable foam , easy to assemble and fly , very interesting, Brighten each child's flight dreams."all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product are. contact Us. we Will Give You The Best Solution."