The GoPro Battery BacPac works not only as a charger for your spare HD HERO & HD HERO2 batteries but also plugs into the back of either camera to nearly double the recording time.
1 Battery BacPac
1 Li-Ion Battery
1 Waterproof Door for HD HERO Housing
1 Skeleton Door for HD HERO Housing
1 USB Cable
Warranty: One Year
NOTE: actual battery life may vary.