Instead of normal small-iron-meshes, we take big Aluminum-panel-meshes as surface for stronger Heat Dispersion. Because aluminum is extremely strong, it is rustless like stainless and also very resistant to scratching, that means this cooler can stay durable and new after months using.. 5-Heights tilting stand (adjusted max 6inch. ) provides better viewing and typing angles, Also this definitely relieve body pain on your neck and back. Switch botton allows to turn off the fan and control fan speed. Besides,two USB ports can connect other USB devices like mouse/audio while the cooler is working.