2.1 Inch E-ink Screen Bluetooth Smart Electronic Labels Support Custom Text/Picture/QR Code/Barcode

1. Multi-functional electronic labels replace traditional paper labels, can be recycled, synchronized in real time, and are highly efficient.2. It can be operated by mobile phones/computers/tablets, with real-time online management and batch price changes and refreshes.3. It is powered by a button battery, with low power consumption and long battery life. You can continue to use it by replacing the battery.4. E-ink screen, color screen display, richer display content5. Support custom display and layout of text, QR code, barcode, and picture6. Waterproof and dustproof, suitable for various environmentsParameter:2.1 inch/2.9 inch/4.2 inch:1. Dimensions: 70 x 34.7 x 13.6mm/88.5 x 41.5 x 13.8mm/104.5 x 87.5 x 12.7mm2. Display technology: electronic ink screen3. Display area: 23.71 x 48.55mm/29 x 66.9mm/84.8 x 63.6mm4. Working temperature: 0-50 degrees Celsius5. Weight: 32.5g/45g/104.4g6. Battery capacity: 1200 mAh (CR2054 x 2)7. Battery life: 3-5 years8. Working frequency: 2.4G