Pentax Battery Grip D-BG6 for K-1

D-BG6 Battery Grip
A battery grip for exclusive use with the PENTAX K-1 camera body. Designed to facilitate vertical-position shooting, it provides a shutter release button, a set of control buttons (AE lock, AF, ISO, exposure compensation, green), a preview lever, and dual electronic dials --- just like those provided on the camera body. It also features the dustproof, weather-resistant construction identical to the PENTAX K-1 camera body. In addition to the dedicated lithium-ion rechargeable batteries, it also accepts six AA-size batteries.