The Vivitar Bluetooth Deluxe Power Grip lets you control your camera with your smartphone or tablet. The easy to use iOS app features single shot, multi shot, bulb and timer modes. The grip holds 2 CAMERA SPECIFIC BATTERIES, or 6 AA batteries with the included adapter. A vertical shutter release button and convenient power switch makes shooting in a vertical position just as comfortable as shooting horizontally. The Vivitar Bluetooth Deluxe Power Grip attaches through your cameras tripod mount.