Trident Aegis Case for Apple iPhone 4 - AT&T/Verizon - Ballistic Green Meets Military Standard MIL-STD-810F: vibration and drop (Independently Tested). Inner-layer of shock-absorbing silicone with an outer-layer of hardened polycarbonate, providing two layers of protection. Self-applicable screen protector included. Power-ports and audio-jacks are covered with silicone plugs to keep out dirt and debris. Dust filters protect microphone and speaker bays. Compatible with: Apple iPhone 4, Apple iPhone 4S