Waveshare 2.13 Inch Wireless NFC-Powered EPaper Eink E Paper E-Ink Display Screen Module for Mobile Android APP, No Battery

2.13inch NFC-Powered e-Paper: Adopts novel paive NFC technology, No battery required, no more battery life trouble,Energy-Saving.APP is provided,Easy to use. Protective ABS Case,Nice&Light Weight.Wirele NFC-Powered Display Refreshing, Paive NFC solution, No Battery Required, No mey wiring, stable operationHow it works. To refresh the display content, use a smart phone with NFC function, or an NFC , close to the e-Paper for both wirele powering and data nsfer. Refreshing Example: Refreshed By Smartphone, Comes With Android APP, As Easy As Swiping A Credit Card. Refreshed by ST25R3911B NFC Board.Power supply : Wirele . Grey scale: 2. Display color: Black / White. Refresh time:2s (data nsfer time is not included). Dot pitch: 0.194x0.194. Display size: 49.70mmx21.75mm. Resolution:250x122. Outline dimension : 65.35mmx40.05mm. Viewing angle: Greater than 170degrees .Application examples. Suitable for price Tags, aet/equipment Tags, sh labels, conference name tags..., Resources & Services.Colour:WhiteMaterial:ABSPackage Contents:1 x 2.13 inch Paive NFC-Powered e-PaperOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.