Brand: Zkong -Name: Zkong ESL digital shelf labels e ink price tag for retail chain stores -Size: 2.9” -Other Size: 1.54”, 1.8″,2.13“,2.6“, 2.7″, , 4.2”, 5.8″, 7.5″ 11.6″, 13.3″ -Language:Chinese, English,Polish,Spanish, Russian,Japanese, Thai, Arabic, etc. -Battery Life: 5 years -Display: white, black, red/yellow -Working Temperature:0~45℃ -Certificates: ISO/CE/FCC/ROHS etc -Function: information display, LED light , NFC, store management etc