sentences:  The underside of the case is also slightly enlarged to accommodate the internal battery.The Sixaxis is constructed of slightly translucent plastic, rather than the opaque plastic used on the DualShock 2 (and the later DualShock 3).Replacing the Sixaxis as the standard PlayStation 3 controller, the DualShock 3 (SCPH-98050/CECHZC2, trademarked "DUALSHOCK 3") features the same functions and design (including "Sixaxis" motion sensing), but with vibration feedback capability.