The Vivitar Pro Series Multi-Power Battery Grip allows the Nikon D3400 to be powered by two EN-EL14a batteries (not included), doubling your shooting capacity. With a vertical shutter release button, this power grip makes shooting vertically as comfortable as shooting horizontally. The grip attaches securely to the camera via the tripod stand. Additionally, because the Nikon D3400 offers only Bluetooth remote shooting, this grip provides an IR (infrared) sensor to trigger the shutter with an optional IR remote control. .