FYI I just received my NX4000 and while the concept is great, it's a piece of junk. The design is pretty smart, but the execution is poor. The mount is very wobbly, you can't tighten the tension screw in the back tight enough to stop the bracket from swiveling down under the weight of the ipad.. The buttons to release the bracket feel really cheap, you can just tell the teeth are going to break within a month or so.. If it didn't come from Hong Kong I'd attempt to return it.. -Keith