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What is e-book pre-sale? What should I pay attention to in pre-sale of e-books? What are the benefits of e-book pre-sale? What effect can e-book pre-sale have?
Is to pre-sell e-book readers.

Electronic paper display technology;

The electronic paper developed by E Ink company is composed of two substrates coated with a layer of electronic ink composed of countless tiny transparent particles. These particles are formed by sealing many black and white particles with positive and negative charges in internal liquid microcapsules. Charged particles of different colors will move in different directions due to different applied electric fields, and appear black or white on the surface of the display screen. At the same time, only when the color of the pixel changes (for example, from black to white), it consumes electricity, and the picture on the display screen can still be retained after power failure, so it is very energy-saving. The power consumption is one thousandth of that of the same size TFT liquid crystal.

Intelligent power management:

This product adopts SpeedStep dynamic power management technology, and the CPU can dynamically switch between sleep state and wake state, which not only does not affect the document processing ability of the CPU, but also greatly reduces the system power consumption, making the average power consumption of this product for normal reading only 1% of that of similar electronic products such as mobile phones.

Functional features:

Energy conservation and environmental protection

Charge once, no need to charge every day, and you can stand by while turning on 15 days or more.

Protect eyesight

It can be read for a long time without flicker, and the font size can be scaled freely without hurting eyes. Roll up a good book and enjoy reading.

You can only see it in strong light.

The electronic paper display screen based on electronic ink technology will not reflect light under sunlight, allowing you to fully experience the fun of outdoor reading.

Non-radiation

It is safe to use, avoiding the harm of radiation from general electronic products to the body, and it is your healthy reading companion.

Full-angle reading

High definition, close to the display effect of paper, reading angle can be close to 180.

Ultra low power consumption

Unique intelligent power management technology, which can continuously turn pages for more than 7000 times.

Put it in your coat pocket.

Exquisite body, light and portable. You can put it in your coat pocket at any time, which is convenient for reading anytime and anywhere.

Can store thousands of books.

1GB memory card can store 500 million words, which is equivalent to nearly a thousand sets of Romance of the Three Kingdoms.