E-INK E-INK panel + NFC E-INK panel + BLE E-INK panel + BLE-en GE40BP 4.0" 236 Dpi E-INK panel + BLE + Indoor PV E-INK panel + NFC-en GE37N 3.7" 129 Dpi E-INK panel + NFC E-INK panel + NFC-en GE37N 3.7" 129 Dpi E-INK panel + NFC E-INK panel + BLE-en GE40BP 4.0" 236 Dpi E-INK panel + BLE + Indoor PV
