It does not have one of the main disadvantages of the first two models of E Ink displays : a substrate made of very thin glass .
E Ink Mobius ( also known as E Ink Flex ) is a modification of E Ink Pearl .
E Ink Pearl does not have one of the main disadvantages of the first two models of E Ink displays : a substrate made of very thin glass .
E Ink Mobius ( also known as E Ink Flex ) is a modification of E Ink Pearl .