The SJ4000 here pursues the same thing Prinzip- a mobile- but useful action camera.
The SJ4000 is equivalent with a waterproof casing and other accessories so that I am actually supplied at the beginning wäre- but have also been a lot of accessories.
And Wennes times where work does not fit the good old tape, as well.
My best experience has been that I have the camera mounted on the back of a bottle at a friend's wedding and had then passed around.
The result was a great party video for the bride and groom was very grateful.
Something else.
The camera is powered via a Micro SD card.
I have the same concern a 32 GB card and so far I had no problems.
The build quality is very good and in general I am very satisfied.
While it is not GoPro- but the SJ4000 is for me anyway TOP!