1.54-inch passive NFC electronic ink screen, no battery, wireless power supply & picture drawing, suitable for mobile phone key ornaments, business             cards,decorations, etc.

It adopts an arc metal frame, which has high appearance and good texture. It supports red, black and white. New passive NFC wireless image scanning            technology,no built-in battery, no cumbersome wiring. When you need to refresh the display, you can use an NFC-enabled smart phone or card reader to approach me            for wireless power supply and refresh the display.