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

- 4.2inch Passive NFC-Powered e-Paper--- This is an NFC-powered 4.2inch e-Paper Module, with 400 x 300 resolution, Adopts novel passive NFC technology. No battery required, no more battery life trouble - Wire-less NFC-Powered Display Refreshing--- Passive NFC solution, No Battery Required, No messy wiring, stable operation - How it works--- To refresh the display content, use a smart phone with NFC function, or an NFC reader, keep it close to the e-Paper for both wire-less powering and data transfer - Application examples--- Suitable for price Tags, asset/equipment Tags, shelf labels, conference name tags,etc. - Online User guide is provided--- Provide a supporting Different systems APP to help users edit and manage the display content of the ink screen.