The cable arrived in time with no hassle from the seller, and works as expected. Great to view my xperia arc's screen on my HD telly. Combined with the official Sony Ericsson Live Dock, I can connect a usb mouse and keyboard and use the arc as a mini computer - works so great it is almost scary. Length of the cable is 1m, so not too short or too long - just right for me.
Only reason why I do not give it 5 stars is because this is the first HDMI cable I have ever bought, so I do not have any comparison.