The P321 is supplied in almost identical packaging the P531. This consists of a silver coloured outer box with the headset secured to a plastic carton on the inside. The front of the packet has a large plastic window which lets us see the headset without opening up the box.
Turning the box over reveals the technical specifications of the headset alongside a variety of further information in various different languages. There are also a few small diagrams illustrating the various adjustable aspects of the headset.
We almost missed the software CD and manual in the P531's box as it was cheekily sellotaped to the inside of the outer box. But in the P321 there was no such driver CD or manual included, in fact the only thing in the box is the headset itself! This does mean, however, that the headset is plug and play and should work fine with all operating systems (including OS X!).