Sony is famous for releasing unusual devices in its home Japan, and the DPT-RP1 is one such example-- a 13.3-inch tablet featuring an ePaper display one can write or draw on via included digital pen.
Technically a successor to a similar device, the DPT-S1, the DPT-RP1 offers a "non-slip" panel Sony says makes use of the aforementioned digital pen better. It also has a thinner and lighter design that is as thick as a stack of 30 sheets of paper, while the processor is also improved.