... and logistics management, member management, etc GMN3300 Contact card model portable data terminalGMN3300contact card modeOperating systemJava 2 Micro EditionCPU32 bit ARM ... LCD screenKeystoke 20 buttons totally including Function keys F1-F2; Number keys 0-9,*,#; Arrow keys; Enter, Cancel, Power on and Reset ... , UL(including battery), FCC Class A, BSMI, CCC JUST Portable data terminal(PDT)