g. , glass and plastic having the button opening 710, or a stack of material pieces e. g. , each made of glass or plastic that are aligned and have the button opening 710. In some implementations, the front cover plate 708 includes a camera opening 712 configured to expose the lens assembly 704. A top edge of the lens assembly 704 e. g. , a periphery of a cover glass 705 of the lens assembly 704 forms a water tight seal with an edge of the camera opening 712. Alternatively, in some implementations, the front cover plate 708 may not have the camera opening, but includes at least a substantially transparent area 712. The lens assembly 704 is disposed under the substantially transparent area 712 to receive light e. g.