This is the protective iPhone case with a Bluetooth headset that snaps into the case's back, ensuring that the headset will always be available. The slimline headset--only as thick as four stacked credit cards--docks seamlessly with the low-profile case to minimize bulk. The headset's flexible ear tip (includes six tips) conforms to the contours of an ear for comfortable, hands-free use. Active noise and echo cancellation technology combines with balanced armature driver technology--previously reserved for professional musician's in-ear monitors--to provide crystal-clear conversations up to 30' away from a paired iPhone. The case's pop-up charging port charges the headset when plugged into a microUSB adapter (headset does not draw power from the iPhone's battery); an iPhone charges via its built-in 30-pin power adapter (not included). A one-hour charge of the headset provides four hours of headset talk time; 72-hour standby time. For iPhone 3G or 3GS.