Product material: the upper and lower shell all aluminum alloy material, internal and the bracket is hot melt ABS plastic, ABS comfortable keys Product features: Seventy percent off slim with stent fashion design, all aluminum alloy metal shell material high fashion feel comfortable, open when use, easy to apply portable also easy to apply, intelligent magnetic induction switch, metal box high quality oxidation surface treatment, chocolate ABS comfortable button Product features:use feel good and durable, general type Bluetooth Keyboard, Android system, Microsoft windows system, suitable for all kinds of models of smart phones and lighter weight, and is not a manual switching system connected with the blue tooth keyboard intelligent switch use matching system. Support system: general type Bluetooth keyboard, support for Apple IOS system, Android Android system, Microsoft windows system, suitable for all kinds of models of smart phones and lighter weight smart tablet. Product color: tuhao gold, silver metal, space gray, rose gold (requirement)