Fully User programmable in high level 'C'Real Time Clock with 20 year Calendar256K Program Memory, Optional 256K & 512K4 MB Data Memory optional 4 MB to 16 MB FlashUser-friendly IDE for rapid application development'C' Libraries providedHigh-Clarity LCD with backlight (4 Rows of 20 Characters)Membrane or Elastomeric Keypad45, 30, 24, 20 or 15 keys Standard or Custom Keypad layoutsUp to 115.2 kbps communication (RS232)Built in 2.1 Ahr Li-Ion batteryIntelligent & fast Battery ChargerRugged ABS caseCustomized specifications