First it happened partially broken and twisted as packed in a single non-rigid envelope that was crushed during transport. Then, after a few tweaks to at least try, the object is useless because, contrary to the product description suggests, no binocular vision is possible. Indeed, the development occurring only a few centimeters from the lens, each threshold so look for something different away from several centimeters which is uncomfortable and no use at all!
We can not do anything interesting and certainly not tinker except use only one lens !!! Avoid it completely!
