This product is available on amazon if you want it.
And the experience I get from this is good one because the first time I am using it.The feel was good and a special feeling which will make you thrilling to watch through these vr4 device.
As of now the device is based on google cardboard technology.
Pros:
The product is good to handle as it is made of cardboard it will not be heavy on your head.
The movie experience is better than conventional watching.
Cons:
As if the body made up of metal it will be heavy to handle.
For the long time usage it may feel some strain.
Vr4 these are at the early stages of development many apps are not there for full usage of it so go for the cardboard device.