WaveShare 1.54inch passive NFC powered e-Ink/e-Paper display

This NFC-powered 1.54 inch e-Paper (BW) display is battery-free and has a resolution of 200 × 200 pixels. You can simply transfer the images and data you want to display to the e-Paper contactlessly via your smartphone or NFC writing device. Makes a perfect trendy keychain. The Android app is a little difficult to use because the menu is in Chinese. However, sending a text or displaying a picture is very easy. Alternatively, you can use the Waveshare ST25R3911B NFC Development Kit NFC writer.

Features:
Images on the display are retained even without power supply.
High contrast, therefore also very easy to read in daylight
No power adapter or battery required
Display can be easily changed via smartphone app or NFC writing device

Supported smartphones
Most Android phones with NFC function are supported.
Some tested and confirmed devices:
HUAWEI
MATE 10, MATE 20, MATE 20 Pro, P20, P30, Honor 10
Samsung
NOTE 9, NOTE 8, S9/S9+, A8S
Sony
Xperia XZ3, Xperia XZ1
Google
PIXEL 3/3XL, PIXEL 2/2XL, PIXEL 1
LG
V40, V30+, V30, G7, G7+, G6
MI
MI 8, MIX3, MIX 2S, MIX1/2, IM6, NOTE3, NOTE 2
HTC
U12+, U11, U11 EYEs, U11, U Ultra, Desire 10 pro, ONE A9S
Motorola
Z3, Z2, Z
ONEPLUS
OnePlus 5/5T/6/6T

Technical details:
Display colours: red/black/white
Grayscale: 2
Interface: Wireless NFC
Display dimension: 27.6 x 27.6mm
Pixel size: 0.138 × 0.138mm
Resolution: 200 × 200 pixels
Full refresh time: 8s
Viewing Angle: >170°
Dimension: 41.28 x 47.84 x 6.34mm
Weight: 18g

Included in delivery:
1x 1.54inch passive NFC powered e-Ink / e-Paper display.