E-readers are flooding the market these days, and KDDI has delivered its most recent offering just in time for the holiday season. Since the biblio Leaf SP02's specs were first released, battery life seems to have grown to 13,000 pages, with presumably a few extra thrown in courtesy of its solar array. The device utilizes KDDI's LISMO Book Store and its 20,000 titles to obtain content, and if that isn't enough reading material for you, the company claims that five times as many titles will be available by 2012. All this can be had on Christmas day -- if you're lucky enough to hail from the land of the rising sun, that is.

Update: Details on the e-reader, much like the device itself, seem to have gotten lost in translation. As a few readers have pointed out -- and our own Engadget Japanese editor Ittousai confirms -- the SP02 has an "open" price of around ¥15,000 (about $180 in US currency), with 3G prices ranging from ¥525 per month for data on a two-year contract, or ¥1,575 without ($6.28 vs. $19, respectively).