Amazon.com : Olympus External Grip HLD-8 (consists of HLD-8G and HLD-6P battery pack) for the OM-D E-M5 Mark II : Electronics
Olympus HLD-8G External Grip for OM-D E-M5 Mark II V328160BU000
Olympus E-M5 Limited Edition Bundle 16-megapixel mirrorless camera with 17mm f/1.8 lens, battery grip, grip strap, and and extra battery at Crutchfield
Olympus HLD-6 Grip for OM-D EM-5 Review - YouTube
Olympus OM-D E-M5 Grip Review: Turn your E-M5 into a 3-in-1 camera!
Olympus HLD-6 (HLD-6G Grip with HLD-6P Battery pack for OM-D E-M5 50332183896 | eBay