I've always wanted to geotag my photos and Nikon doesn't offer this feature on their high end DSLRs so I gave this one a try. It works fine when it works, but I spend a lot of time playing around with it and my D750 trying to get it to sync up and work. Every time I want to use it, it takes multiple attempts to securely connect it to the camera, which is frustrating. I wonder why it can't work seamlessly like my smartphone, which can automatically geotag every photo, or other Nikon compact cameras. The cable is external and can be damaged when using or storing the camera. I now unplug the camera cable before putting the camera in my backpack as I broke the original cable. I found a unique replacement cable on ebay that arrived from China in about a week. I wish this device was better integrated with Nikon DSLR cameras and had a better cable solution.