Aero Case for Samsung Galaxy S 4 SGH-I337 / SPH-L720 / SGH-M919 / SCH-R970 / SCH-I545 / SCH-R970C / GT-I9505 - Opposites Attract Dual layer protection Soft inner silicone layer with a hard polycarbonate shell The outer layer is covered with a professional high gloss lacquer finish. Complete access to all ports and functions Compatible with all versions of the Samsung Galaxy S 4 SGH-I337 / SPH-L720 / SGH-M919 / SCH-R970 / SCH-I545 / SCH-R970C / GT-I9505. This case is not compatible with the Galaxy S 4 Active SGH-I537