Optimum Battery Performance and Dual Power Supply 150 hours continuous operation with Alkaline batteries or 30 hours with Rechargeable battery Large Memory Capacity 2MB RAM plus 8MB FROM memory Large Display 5-line x 21-character large LCD display Tough and Robust Durability against a drop from a height of 1.5m Multiple Interfaces Integrated IrDA (version 1.2) 2-way Cradle system ( Satellite and Basic Cradles)