... Features High speed data collectionHigh-performace processor ARM9 with 400MHz dominant frequency, Modular design, Optimized operation ... 5’’ true color TFT LCD, 320x240 pixel,65536color, with backlightBatteryRechargeable Li-ion battery, working Time (Continuous) > ... range: (-20~+60)°CButtons22 buttons (with numeric type in), with backlightCommunicationUSBDimensions190mm x 110mm x 38mm (without cover ...