Well made and perfectly suits my Galaxy S4

As can be seen, the lever closely resembles that of the Xbox360. It has the same dimensions but feels lighter to me. Listed ergonomics, holders of Xbox will therefore not disorient.
The first bluetooth association is somewhat laborious (think to HOME + X) but once done it's happiness!
Emulators like FPSE, Gendroid, SuperN64 SNES9x and support the joystick without problems (and all buttons) through just to some of them the key configuration in their own menu.
Some store the games also support natively handle (Sonic CD for example). Caution, however, there has still not bad games "touch" the blind (ex: batman arkham origins, Dino hunter, etc ...) that do not support BT controller.
The phone once in the support remains in place and the latter does not impede access to the keys (Volume +, Volume - and power) but this will however depend on the phone model.
The support is not bad stretches and should probably afford to fix the biggest smartphones such as the Galaxy Note (Note however, you can forget the shelves because even a tablet 7 '' will not pass, I think).
Regarding autonomy, I am a paranoid battery and therefore I plug the joystick every night; therefore difficult to give an objective opinion, I can just say that the controller takes no problem one day (approximately 4 hours of continuous use for me).

Unlike the Xbox, there is also a media controller (play, fast forward, volume +/-, etc ...) on the bottom right of the joystick controller and although this seems quite trivial media it works MX player in particular.
However, the controller can not be a support for the phone when watching a movie such as the smartphone is too heavy, throttle and smartphone tilt backwards when placed on a table for example .. .dommage!
Another small downside to the use, the first time the media held in position and even moving in all directions, the carrier remained in position; However, after a few days, the media began to take a little game and therefore when I incline the joystick to me, the smartphone has a tendency to tilt too ... nothing too serious but it could still hinder lovers play elongated.

Conclusion: This is a good product especially for the price and it fulfills its function. The controller has "triggers" which, unlike many levers of this type should enable better fun games on the racing simulations for example (I have not tested yet, however). The media is a function but is of no real interest to me especially as a media mode use is tempered by the balance knob block + smartphone.
Delivery is very smoothly and well wrapped package was received within 5 days.