4.2inch Passive NFC-Powered e-Paper, 400 x 300 Pixel ePaper Screen, Adopts Novel Passive NFC Technology No Battery Required No Messy Wiring, Wire-Less Powering & Data Transfer

4.2 inch Passive NFC-Powered e-Paper, with 400 x 300 resolution, Adopts novel passive NFC technologyNo battery required, no more battery life trouble. Users can transmit data from a smartphone or NFC reader to e-Paper and refresh it by NFC. Features 1) No backlight required, e-Paper keeps displaying the last content for a long time without power. 2) It does not contain a power supply such as the battery itself, which is suitable for application environments with a limited power supply. 3) You can modify the display content by smartphone. 4) Equipped with ABS plastic shell with good strength and toughness.

5) Provide a supporting Android APP/IOS APP to help users edit and manage the display content of the ink screen.
6) Refreshing Example: Refreshed By Smartphone, Comes With Android APP, As Easy As Swiping A Credit Card. 7) Online User guide is
Provided: //bit.
ly/47lawZe Specification Power: NFC-powered
Resolution: 400 x 300
Dot pitch: 0.212 x 0.212
Refresh time: 4s
Display color: black, white
Viewing angle: >170°
Outline dimension: 105.0 mm x 94.1 mm x 9.90 mm
Display dimension: 84.8 mm x 63.6 mm Package Content 4.2 inch NFC-Powered e-Paper x1 Double-sided foam tape x2