The SoundDock can be equipped with 6 Mignon (AA) batteries and can be used on the move. So a bet on the balcony or the terrace is quite possible.
With the supplied remote control iPhone 3GS can be controlled, but which I think is not quite as useful because it also has to always see what you just controls and then you can control even the same make on your iPhone, which then works significantly faster.
In addition, any other audio source can be infected with a 3.5mm jack cable so you can take the SoundDock as an extension for easy laptop speakers.
Only the slot for the iPhone / iPod is a bit fiddly. Per adapter must be decided in advance, with which device the station is equipped and even that is always a little difficult to pin and stuck here and there.
On the whole, however, my full recommendation, because the sound just for such a small portable device is excellent. Only the price could be a bit lower. He scares before buying from a little.