The digital notepad Pomera DM100

This unusual device is equipped with a full keyboard, 5.7-inch monochrome display, and Bluetooth interface. As a permanent storage device uses SD-card. Actually the list of options on this end. The unit is valued in the Japanese market for 2-second after switching on readiness, 30 hours of battery life, small size and weight. It is used for text, and can convert it to a QR-code for the transfer on a smartphone. Price around $350.

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Digital Notepad with Built-in Keyboard