This housing has an adjustable shim system in it allowing you to fit many of the popular phones on the market into it. It also has a vacuum port system – no longer worry about if your seal is safe. Simply give a couple pulls on the vacuum pump (included) and the housing will let you know whether it is safe to dive. This version also comes with an additional depth and temperature sensor, so you can track vital information with your housing. It’s made from anodized aluminum.