The GoPro Protective Lens + Covers kit consists of multiple protective covers, sealing doors, and a protective lens for your GoPro HERO4, HERO3+, or HERO3 camera. The Protective Lens fits over the existing GoPro camera lens and guards against dirt, dust, and scratches when you're using your GoPro camera outside of its housing or with the optional Frame Mount. There is also a Camera Lens Cover that acts as a lens cap when the camera is not in use. To seal the connection ports as well as the battery compartment a Replacement Battery Door and a Replacement Side Door are included. All of these parts work with the naked HERO3, HERO3+, and HERO4 cameras.
For the Standard Housing, the Standard Housing Lens Cover acts as a lens cap and also covers the power button. This cover is specifically for the HERO3+ and HERO4 Standard Housing - it will not work with a HERO3 housing or the Dive housing.