NFC Four-Color E-ink Screen DIY Phone Case Features: 1. Material: Made of PC+TPU+tempered glass material, wear-resistant and scratch-resistant. 2. Comprehensive Protection: Comprehensive protection of your device from general scratches, dirt and wear and tear. 3. Color e-ink design: The early case came with a four-color e-ink display. This will allow for a more realistic depiction of the image or pattern on the back. Changing the image is very easy as you just click on the picture using the app that comes with the case. 4. Cool and stylish design: Cool and stylish appearance, protect your phone stylishly. 5. Precise Cutouts: Precise cutouts and openings provide easy access to all features, ports, and buttons. Product parameters: 1. NFC: IS014443A 2. Resolution: 240 x 416 3. Monitor: 3.7-inch black, white, red and yellow four-color ink screen 4. Product size: 164.6 x 81.48 x 12.84mm 5. Note: The actual product is subject to the title model, and the model machine in the picture is for reference only.