7.3 inch HM730 Dot Matrix EPD Graphic Screen Cloud-managed Pricing in Seconds 5- years battery Strategic Pricing Bluetooth LE 5.0
4.4 inch HM440
Dot Matrix EPD Graphic Screen
Cloud-managed
Pricing in Seconds
5-year Battery
Strategic Pricing
Bluetooth LE 5.0
3 inch HM300
2.4 inch HM240