1. Anti-aging, environmentally friendly, high-strength synthetic rubber material, durable
2. Built-in anti-drop air bag, providing more protection when the phone is dropped
3. Internal honeycomb heat dissipation design, when using the phone, more heat is dissipated through the honeycomb groove
4. Anti-slip radian design, good hand feel, you can't put it down more than bare metal
5. Protruding key design, accurate key positioning even with gloves or in the dark
6. Widened and enlarged power and volume holes, it is more convenient to connect data cables and audio cables
