This is one of those products that would probably appeal to the same crowd who waxes nostalgic for old brick cell phones. The handset attached to this Buffalo keyboard looks to be around the same vintage, albeit an updated version that uses Skype.
It's beyond us why people would insist on a corded handset like this, when there are so many other alternatives available out there--including phone-mouse combos. It also appears Lilliputian in size, as Dvice points out. Then again, it's destined for Japan, where there aren't too many Shaq wannabes wandering around.