3. Low power consumption: ultra low power electronic paper screen, almost zero power consumption in static operation;
4. Long service life: button battery power supply, stable voltage, long power, / 5 times a day charging, battery service life more than 5 years; back design humanized knob, beautiful and practical, easy to remove the back cover, easy to replace the battery
5. Clear display: high quality electronic paper screen, high contrast, dot matrix pixel display, fluent and clear font, not limited by language; screen angle of view is close to 180 °, better display effect; display area can be customized and edited;
6. Good user experience: QR code, bar code and NFC realize online and offline interaction to give customers a better shopping experience.