4.0-inch Four-color E-paper Exhibition VIP Badge with Dynamic Business Card Agenda Guide and Access Rights Colorful E-ink Screen

Screen: 4.0 inches
Screen colour：4-color
Resolution 528*768
DPI 236
Outer dimension 66.25*104*2.8 mm
Weight 29.4g
Battery Li-On 
rechargeable :100mAh
Transfer:Bluetooth beacon WITH NFC
Super waterproof
All-in-one card integration