Amazon.com : Pentax D-BG4 Battery Grip for Pentax K-7 K-5 K-5ii K-5iis Digital SLR : Digital Camera Battery Grips : Electronics
Pentax K-r - Wikipedia
BG7QKY9 Synergy Digital Camera Battery Charger, Works with Pentax Optio E40 Digital Camera, AA & AAA NiMH Quick Battery Charger,
Pro D-BH109 AA Battery Plastic Holder For Pentax K-R KR K-30 Camera DSLR - Z244F | eBay
Triopo TTV-204 Ultra Thin Photographic Equipment LED Camera Video Light Lamp Panel 3200K~5500K Dimmable for Canon Nikon Pentax DSLR Camera Video Camcorder Fit for Sony NP-F NP-FM NP-H Series Battery A -