The Asus Padfone has been making waves ever since it was unveiled at Computex in May 2011.
What we saw then was a high-powered smartphone that could be slotted into the rear of a tablet shell, instantly offering the best of both worlds.
But although the device has been spotted at various trade events in the nine months since, Asus is yet to officially launch it.
That's going to happen at Mobile World Congress at the end of this month, when we'll find out all the features and specifications of the device. For now, here's what we know so far about the Asus Padfone.
It's a phone...and a tablet
Put together a tablet and a smartphone and what do you get? If you're working in Asus' research and development department, the answer is a Padfone. The Padfone itself is an Android-powered smartphone, but it comes complete with a Padstation tablet dock.
Asus has said the Padfone will be the component that houses most of the working guts, such as the processor, RAM and internet connectivity. The Padstation is little more than a 10.1-inch screen and a battery. Slot the Padfone into its home on the back of the Padstation and its display is automatically resized to fit the larger screen.
It will be twice as powerful as the iPhone/iPad
Both the iPad 2 and iPhone 4S run on dual-core processors. The Padfone will have a quad-core processor inside, which should make it fast and stable when running multiple applications and also powerful enough to run console-quality games. The exact chip has not been specified. Asus' new Transformer products use Nvidia's Tegra 3 chip, but The Verge reported that the model on show at last month's Consumer Electronics Show was running on a Qualcomm Snapdragon S4.