1、MULTIPURPOSE: When bundled with an APP, the E paper display has the lightness of paper and the convenience of an electronic product. You can use it as a business card at work, a conference table sign, an electronic door sign, a price tag, a visual meeting agenda or planner, a reminder card when you're out and about, and your favorite portrait or decorative item at home. 2、3 COLORS EDITABLE DISPLAY: The micro encapsulated E paper screen displays images and text in three colors and can have a vintage grainy pattern like an old newspaper or photo, and the template can be customized to support text, images, QR codes, barcodes. 3、REFLECTIVE DISPLAY: The electronic paper display is made of ink screen and is displayed by nature, ambient light reflection. According to the reflection principle, it is visible at any angle, making it easy to see the information on the label at 180°. 4、ULTRA CLEAR DISPLAY: Electronic paper screen label has better contrast than LCE screen and no glaring, making the display present the comfortable and clear effect of paper. At the same time, the stronger the surrounding light, the more pronounced the contrast, the clearer the display. 5、ENVIRONMENTALLY FRIENDLY AND CONVENIENT: Electronic price tag can replace the traditional paper label, recyclable, energy saving and environmentally friendly, built in 4000mAh battery, long battery life, charging once available for a year, saving time and effort, high operational efficiency, easy to install. 1 x E Paper Display Item Type: E Paper DisplayMaterial: ABSColor: WhiteBattery: Built in Polymer Lithium Ion Battery, Capacity: 4000mAhDisplay Screen Size: 13.3 InchesDisplay Technology: 3 Color Ink Screen Display TechnologyConnection Method: BT (Update Screen Content Wirelessly via Bluetooth)Support Content Formats: Text, Barcode, QR Code, ImageTemplate: DIY Designable Templates, Multiple Templates SwitchableFirmware: Support Firmware Upgrade