Panasonic DMW-DCC12 DC Coupler for Lumix GH3, GH4, GH5 Compatibility: Panasonic Lumix GH3, GH4 and GH5 Digital Cameras Dimensions (HxWxD): 2x2x3" / 5.08x5.08x7.62cm Weight: 1lbs / 0.45kg