Juniper Systems' rugged TK6000 handheld computer is easy to operate and features improved connectivity and expandability for data acquisition needs in extreme environments. An ergonomic, lightweight, magnesium case withstands multiple 5-ft (1.5-m) drops on concrete, and the waterproof and dustproof computer operates up to 32 h. Large color-coded keys and a visible display improve usability. The TK6000 operates on Windows Mobile 6.1 for secure interface between the field and office and runs at 624 MHz with 128 MB RAM and 1 GB of internal data storage with a slot available for expansion. Wi-Fi and Bluetooth wireless technology come equipped, and an optional cellular data modem expansion pack allows remote connection. The expansion pack can be customized to house special signal conditioning circuitry, communications circuitry, and sensor interfaces.