The DMW-BGGH3 gives DMC-GH3 longer battery life of more than 1, 000 pictures. When using LVF & the battery inside the body is also used. The ergonomically designed DMW-BGGH3 offers comfortable grip & easy handling even in vertical shooting. Three dedicated buttons for exposure, ISO & WB are equipped in addition to the release button on the top as well as the front/ rear dials to be used just in the same way of using the camera DMC-GH3.