EACHSHOT MK-A7II Pro Built-in 2.4g Wireless Control Battery Grip for Sony A7 II A7R II as Sony VG-C2EM Battery Grip for Sony A7 II with vertical-shooting function Two lithium batteries can be put into the grip which make it have double power With AF(auto focus), MF(manual focus), AEL(AE lock) functions With two wheels which are convenient for operation