Aluminum alloy material, equipped with cooling fan to enhance the heat dissipation effect. Precise hole position, easy installation. Compatible with for 5 Plus. The case supports the installation of external antenna (antenna not included) Note: 5 Plus is not included. Cooling fan installation instructions: The second pin red corresponds to the positive terminal The third pin black corresponds to the negative terminal Color: black Material: aluminum alloy The actual product may have color difference due to different light or display Package Contents: 1 x Metal Case 1 x Cooling Fan 1 Set Screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.