Hanwang electronic paper books D20 and F20 are big brocade books, which are better. It is best to provide a comparison chart! thank you

The difference between Hanwang f20 and d20 is that the content is preset, d20 is a student version, and other appearance functions are the same. There is no handwriting function, no network function and no 5-inch screen. Shanda Yunjin is a 6-inch screen with little built-in content. There is only one book in the whole book. The book mall that needs to connect to the starting point through wifi does not have wifi everywhere. From the price point of view, Jin Shu is about 400 cheaper than Hanwang, Jin Shu 999, Hanwang 1399,; From the functional point of view, it seems that the brochure is better, but the brochure supports few formats, only txt, and other documents are not supported. I tested it myself. Hanwang can read word, pdf and other formats; The network connection is not in Hanwang, but in Jin Shu. Of course, it's just an expensive bookstore in the cloud (4 points for a thousand words and 2 points for a thousand words). Look at your comprehensive consideration. The following are the key parameters:

Hanwang 1399

Screen type e ink electronic paper, ratio: 4:3.

Screen size 5 inches

The display effect is black and white, 8 gray levels, 600×800.

Input mode key

Extended storage TF card, with maximum support of 32GB.

Endurance polymer lithium-ion battery (1500mah), 3.7V

Volume173x117x10.3mm.

Weight195g

Jin Shu 999

Text format: supports snb and txt.

Screen size: 6 inches, 600×800 pixels.