Premium Black Signal Indicated Light Up Soft Silicone Gel Skin Cover Case for Blackberry Storm 2 9550 [Beyond Cell Packaging] Silicone has signal indicator technology, which lights up your phone when you receieve a call!!! Replacement battery included. Plug in your charger, cable or headset without removing the case. Prevents damage to your phone from objects in your pockets, purse, or by dropping it. Gives your phone a fashionable and attractive look.