Bechmarks are one thing but there are no words to describe how low quality is software and drivers, together with lenovos technical support.
Driver problems makes e-ink screen (being the biggest benefit of this device) totally useless, screen rotation changes each time you lock it for a second while reading and then there's no other way than start turning everything off to get to the top menu, rotate it again, which with each longer reading gets terribly annoying.
Lenovo support advices using programs which move your mouse to prevent the screen going to sleep...
The battery joke is a total joke, I know lenovo advertises this to work up to 21hrs on Eink. Based on my experience, with the lowest screen brightness, reading mode on, battery saver turned on, wifi and bluetooth off, this device drains the whole battery in 6 hrs.
Shipping a device in such a state is a shame on Lenovo.