They say it only works very close to the camera. They say it only works before the camera. Also said he did not work! I paid 240 for the trick and 000 for delivery. I was ready for anything. But, against, I'm happy. It was delivered surprisingly fast. I tried right away and I can tell you that it works even at a respectable distance from the camera. The specifications of this thing say it works up to 10 meters. I have not tried at that distance. So I did not find the distance at which it stops working. But frankly, if you use the remote control within 10 meters of your camera, you'll steal your camera. If you need the remote control in an enclosed space, then you can probably go as far as you want and you have good reception. If you want to enable your camera to another country ... so I recommend buying the WiFi stuff for your camera (Nikon WU-1A). But seriously, for 240 you something that does its job. For business needs there are other better options and more convenient and has a higher price. I also found that even works behind the camera and to the sides, and even behind a small wall. So I must say it works very well for what he promises and has a very low price. I highly recommend it for beginners and photographers vacation and also for serious amateurs who just need a shutter button not expensive to support while away from their camera. (Incidentally, I tested it on a Nikon D610.)