With a battery capacity of 36 WATT-hours, the Hydrus handheld computer functions for over 40 hours, working overtime on various field applications. It offers a 320 x 240 Landscape QVGA display with integral touch screen as well as “Super-Sunlight” readability, both outdoors and indoors. A 5 megapixel (4 MP processed) True-Camera-System captures color images and bar codes with real auto focus and illumination. A 55-key alphanumeric keypad with application-specific graphics plus an eight-position joystick allows for individual or combined operations. Integrated speaker and microphone enable use of the device for voice communications. The Hydrus offers wireless computer communications and networking capabilities.