Fuhjythy 1.54 Inch Electronic Ink Screen 1.54 Inch Three Color E-Paper Display Screen Image Wireless Transmission Keychain

You can modify the display content by smartphone. It does not contain a power supply such as the battery itself, which is suitable for application environments with a limited power supply. It is suitable to use as equipment labels, shelf labels, information storage, etc. No backlight required, e-Paper keeps displaying the last content for a long time without power. Equipped with ABS plastic shell with good strength and toughness.