The new waterproof housing features a lock for its rear door's lock. Yes, it is a lock on top of a lock. I feel that this is a bit unnecessarily complex when the old locking mechanism always seemed secure enough for my needs.
The Hero3 features the same upgraded LCD interface that made the Hero2 so much easier to use than any previous GoPro model. The buttons for power/mode select and shutter release are larger and easier to hit when the camera is used outside of the case.
Beneath a plastic door on the side of the unit, you'll find the Hero3's collection of ports and inputs. Micro-HDMI outputs digital video and audio. Meanwhile, Mini-USB is used for charging, syncing, and -- with the help of optional accessories -- a microphone input or analog video output. The smaller Hero3 no longer has space for a full-size SD card, so it steps down to microSD.
The $399.99 GoPro Hero3 Black Edition includes the Hero3 camera and its case, a nonwaterproof skeleton replacement door for that case, a few adhesive mounts, the Wi-Fi remote, some GoPro stickers, and USB charging cables for the camera and its remote.