"The fixed jacket is stable and does not shift, making it more steady while playing games. Metal induction shooting, conductive metal, quick installation. The game cannot detect cheating when using physical buttons. Lightweight and portable, with support for shooting games. Android and iPhone smartphones with screens ranging from 4.5 to 6.5 inches are recommended. Description: Mobile phone design game supplementary keys will improve your experience. The buttoned back clamp keeps the auxiliary device steady on the mobile device. Metal induction shooting, copper contact, the response is more sensitive, light pressure can produce the effect. Specifications: Material: plastic. Color: Clear. Size: Package. Included: One pair of shooting game triggers (please confirm that your phone is compatible).