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4 2 inch e ink e paper label

4.2inch Epaper Display Tags Wireless No Need Base Station ESL E ink Bluetooth

4.2inch Epaper Display Tags Wireless No Need Base Station ESL E ink Bluetooth

4.2inch Bluetooth wireless ESL, e-ink screen, mobile operation, dustproof and waterproof, LED light, 10m communication radius.

Model:Bluetooth E ink ESL SETPB0420R