It s good to have one especially who is doing mainly photography on tripod and the steady of camera while shoot is crucial. Also who is mainly doing bulb mode and long exposure, this kind of remote is for you. There s a genuine Sony Bluetooth remote on market as well but the price is ridiculously expensive . However, the Sony one has more functionality but if you are doing only what I mention earlier, this one can get the job done with no worries . It a also more compact than the Sony one as well.