alaTest has collected and analyzed 6 user reviews of Energy Sistem 424924 e-book reader - e-book readers (3.5 mm, Lithium, E Ink Carta, MicroSD (TransFlash), MicroSDHC, MicroSDXC, 1024 x 758 pixels, CHM, from Amazon.co.uk. The average user rating for this product is 2.8/5, compared to an average user rating of 4.4/5 for other products in the same category on Amazon.co.uk. People are impressed by the battery. The portability also gets good feedback, but some have doubts about the reliability. There are some mixed opinions about the design and performance.