1. Using high-quality imported environmentally friendly materials, natural and environmentally friendly, non-toxic, tasteless and non-corrosive; PC+TPU dual combination. 2. Simple, stylish, generous, fit with the fuselage, precise opening position, reserved earphones, chargers and other sockets, does not affect the operation of any function keys on the fuselage. 3. The surface is dust-proof, waterproof, non-sticky, moderately soft and hard, comfortable to the touch, and has the effect of wear resistance and anti-fall, so that your love machine can be well cared for. 4. The back shell is equipped with a metal ring bracket and a built-in iron sheet, which can support watching videos and browsing the web, and has a car magnetic suction function. The product is combined with humanized and personalized design.