An impulse buy. Officially it retailed for 699 — it was meant to pair with the Xperia line of tablets. Then it ended up on Taobao at 35 yuan each, buy one get one free (you had to write the secret code “buy one get one free” in the order notes). So don’t bother hunting for it — probably sold out by now. I grabbed two, the BOGO kind, and messed around with it a bit after it arrived… My impression? Simple. Not very useful…