Description 100% brand new and high quality Features: After testing, it will not affect the WIFI signal. Increasing the large Cooling column allows for better heat dissipation. Increase the power cooling column to bring better heat dissipation to your for Orange Pi Zero . No longer worry about overheating. There is no need to install a fan. It also provides perfect heat dissipation. Durable, hard, long-lasting rust-free, wear-resistant, and can be well protected to your for Orange Pi Zero . All ports and slots of the case can fit perfectly with for Orange Pi Zero. Specifications: Size: approx. 52x47x15mm/2.05x1.85x0.59in Material: Aluminum alloy Color: black Note: Light shooting 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. Package Includes: 2 x Aluminum Alloy Case 4 x Thermal Adhesive Pad 1 x Screw Set