Expert Shield *Lifetime Guarantee* - THE Screen Protector for: Lumix GH4 / GH3 - Crystal Clear Your Expert Shield comes pre-cut to the size of your Lumix screen. Your Expert Shield comes with a no bubble guarantee. Your Expert Shield also comes with a no scratch guarantee. Actually, your Expert Shield is pretty much guaranteed to make you happy (we guarantee it). Oh, and those guarantees last for the lifetime of your device. Because we love you.