Place of Origin:Guangdong, China Brand Name:SUNY Display:E-ink Epaper Display Screen Color:Black + White + Red / Black+White Power life:5 Years LED Light:Available,7 Colors:R,G,B,C,M,Y,W Memory:4 pages Cache Battery:CR2450*1 Replacement Battery:Available, Quick-Release Usage:Electronic Shelf Label Frequency:2.4 GHz Certification:CE, FCC, ROHS