Via Flickr:
Kindle常“一睡不醒”，致电amazon，答为皮套挂钩问题。作为补偿，赠一带夜灯之皮套，机器电池取电，夜读效果甚佳。
I used to have a problem of waking up the machine. Amazon said it was caused by the defected leather cover. Hence, I received a lighted cover from amazon for free. The light is powered by the battery of the machine, providing awesome vision at night.