
On January 27th, 2010 Steve Jobs unveiled the iPad. After the media event Walt Mossberg and Kara Swisher had an interview with Steve Jobs on the iPad.
From the keynote we know iPad has 10 hours of video playback, and with one month of standby power. On the interview Steve Jobs said iPad has a 140 hours of music playback from a single battery charge.
When asked about how much iBooks cost on the iPad, Steve said, the price of ebooks or iBooks on the iBookStore are priced as same as Amazon at $9.99 per book.