Neewer Replacement Battery Grip for Pentax D-BG4 Works with Rechargeable D-LI90 Battery or 6pcs AA Batteries for Pentax K-7 K-5 Cameras Neewer&reg; Replacement Battery Grip for D-BG4 Works with Rechargeable D-LI90 Battery or 6pcs AA batteries for Pentax K-7 K-5 Cameras;Specially designed for Pentax K7 K5 Cameras.Note: Camera not Included.^Can hold rechargeable lithium-ion battery D-LI90, or six AA lithium/Ni-MH/alkaline batteries.^Same function as the D-BG4 battery grip.^The buttons, the connection parts of the battery grip are all dust-proof, and have been anti-dropped.^Professional edition with vertical-grip shutter-release button, can hold extra battery for your digital video camera / camcorder.