The camera lens cover protects the glass from dust and scratches.
It is securely fastened onto the cover and stays in place.
The detachable lens cover can be connected to the earphone port or to a keychain/strap that is already on your phone. This will keep the lens cover secured to the phone when the camera app is in use.
Of course, along with the lens covers main function, the lens cover is an accessory for those who want to personalize their phones.
Patent Issued: US 8764319