Detected and active on a simple USB connection to newer PCs I've tested (including Windows Vista), it can be stored easily by being re wrapped and stored in a small plastic bag provided, I advise to keep state during the first opening. There is a small cylinder 14 by 8 cm when stored. Perfect for troubleshooting keyboard and waterproof, it could almost be used in extreme conditions. It has the usual CAPS and Num locks LEDs.
Good for any temporary or utilsation 'troubleshooting', surely prefer a standard keyboard for your life's everyday PC; unless the fact that it is almost cahoutchouc / tightens and completely flat (horizontal) when deployed do not mind.