First of all: The device does everything as described and set forth herein. But: The Chinese / English user manual was not helpful, So I got me the German guidance from a very similar instrument from. Hama. Thus, it has then worked quite well. The device itself I find extremely lightweight and the two main keys are quite wobbly and loose. Find the pressure point for autofocus Start is already setting creates a real challenge. What annoyed me terribly is - the unit has no on / off switch. At the slightest touch of the keys, the unit automatically switches on and after a certain period of inactivity and automatically off. For the photo backpack or camera bag unusable - or is removed each time the batteries and then programmed locally new again. But for the price you may well no longer be expected -