1、Editable Electric Paper Screen: When the electronic paper display is bundled with an APP, it combines the lightness of paper and the convenience of electronics. It can be used as a name card, meeting tag, electronic door sign, price tag, and visual conference agenda or planner. 2、Retro Grainy Display: Electric paper display features electronic ink capable of rendering images and texts in three colours with a vintage, grainy pattern similar to old newspapers or photos, supporting text, images, QR codes, and barcodes. 3、Reflective Display, Visible from Any Angle: The electronic paper display screen is made from electronic ink and reflects ambient light for enhanced readability. True to the principle of reflection, information on the display can be viewed from 180 degrees. 4、High Contrast Ultra Clear Display: Compared to an LCE screen, the paper screen offers better contrast and glare free display, rendering a paper like comfortable and clear viewing effect. Furthermore, the stronger the surrounding light, the clearer the display becomes. 5、Energy Efficient: Replacing traditional paper tags, this wireless paper display is reusable, energy saving. With a built in 4000mAh battery, it can last for a whole year on a single charge, simplifying daily operations with high operational efficiency and easy setup. 1 x Electronic Paper Screen Item Type: Electronic Name Badge Display ScreenMaterial: ABSColor: WhiteBattery: Polymer Lithium Ion Battery (Built in), Capacity: 4000mAhDisplay Size: 7.5inDisplay Technology: 3 Color Ink Screen Display TechnologyConnection Method: Bluetooth (Update Screen Content via Bluetooth Wireless)Supported Content Formats: Text, Barcode, QR Code, ImageTemplates: DIY Designable, Multiple Templates for Easy SwitchingFirmware: Supports Firmware Upgradefor iOS APP Download: Bluetooth Tag on for APP Store