Carlson Explorer II is a handheld computer combining state-of-the-art environmentally rated hardware, powered with Carlson SurvCE, for the most powerful and easy to use data collection package. Carlson Explorer II Specifications Power: Rechargeable Nickel Metal Hydride battery or 6 AA alkaline batteries Display: Supertwist Nematic Liquid Crystal TFT with white LED backlight Resolution: 320 x 240 pixels QVGA color Touch Screen Environmental: Operating temperature: -20°C to +50°C Storage temperature: -20°C to +70°C Charging Temperature: -20°C to +40°C Humidity: 5-95% Non-condensing CPU: Type: Intel PXA255 processor with Xscale technology Speed: 400 MHz Operating System: Windows CE.NET 4.2 professional Memory and Mass Storage: SDRAM: 64MB Internal Compact Flash: 256MB Compact flash card slot Interface: RS232 serial communications User Input: Touch screen Full function alpha numeric elastomeric keyboard Indicators: Charge/Low Battery Indicator Physical Dimensions: Height (H): 9.84 inches (250mm) Width (W): 4.75 inches (120.7mm) Depth (D): 1.83 inches (46.5mm) Weight with NiMH Batteries: 29 ounces (822 grams) Warranty: Two years Features More Durable Weather resistant ruggedized shell environmentally rated to withstand wind-driven rain. More Memory 400 Mhz Xscale processor 256 Mb memory Bright Display Color TFT, bright touch screen Better Control New and improved non-glare keyboard optimized for surveyors! And new convenient handstrap and stylus. Powered With Carlson SurvCE Carlson Explorer II is powered with Carlson SurvCE, for the most powerful and easy to use data collection package.