Neewer BG-3C Wireless Remote Control Battery Grip (Replacement VG-C1EM ) Works with Sony NP-FW50 Battery for Sony A7 A7R A7S Specially designed for Sony A7/A7R/A7S mirrorless camera. Can hold one or two NP-WF50 lithium batteries(NOT INCLUDED). Neewer BG-3C replacement for sony VG-C1EM Battery Grip . Equipped with two vertical shutter-release button for shooting in a vertical position.