Only bought 01/2015 and had a couple of times in use, the remote release suddenly stops working. I first thought of the button battery. If the article is too long in the warehouse, it may well be that after a relatively short time, the battery stops working. So, buy a new button battery to Euro 4.99 and beautiful ... the remote release does not work well with the new battery. I am pleased, if there is such a simple technical equipment at an affordable price. Dieserart devices are anyway mainly produced in China. Higher quality Fernauslöser have usually almost the same components. That the remote shutter completely gives up the ghost after only a few weeks, is neither a cheap nor expensive for a device in order