The Phottix Premium Series BP-K20D Battery Grip is designed for Pentax K10/K20D digital cameras. This battery grip uses one D-L 150. The camera can be used with the battery grip BP-K20D attached if there is a battery in either the camera or the grip. One Pentax remote control E or remote control F and one SD Memory Card can also be stored in the BP-K20D.
It is also equipped with a vertical-grip shutter button, On/Off button for easier vertical shooting. Also it has a Tripod Socket.