The case details are 2mm 2Tone injection silicone case + PET screen protector + icaps2. It comes in the following 2Tone colors: GRAPHITEonBLACK, BLACKonGRAPHITE, BLACKonWHITE, ELECTRAonBLACK, ELECTRAonWHITE, JACK OonBLACK, MARTIANonBLACK, PINKonBLACK, PINKonWHITE, REDonBLACK, WHITEonBLACK, BLACKonBLACK, and WHITEonWHITE.
3G iPhone Case
1st Gen iPhone Case
The differences are minimal but do seem to correspond to the previously leaked specs given to case manufacturers.