I can t see anything the sony does that this battery grip doesn t in fact this grip came with a wifi remote which the sony does not have more on the remote later.
Meike battery grip sony a7r3.
Accessories manufacturer meike has released details of a new grip it will be selling for the sony a9 and a7r lll bodies that can hold two batteries and double as a remote control.
The meike mk a9 pro battery grip is designed to make vertical shooting more comfortable and comes fitted with a shutter release two custom buttons an af button a joystick and two control wheels as well as its.