The Gemini Series balances provide a larger weighing chamber and smaller footprint than conventional balances. Internal calibration is standard. These analytical balances are easy to use and calibrate, and adjust their settings based on environmental changes. Features include: Fully Automatic Self-Calibration, Splash Proof Keyboard and Display, Advanced Stabilization Software, Automatic Adjustable Environment Setting, Data Memory (up to 200), Multiple Weighing Units GLP Compliance. Standard RS-232C allows bidirectional communication with PC. This model comes bundled with A & D's new WinCT Software. Blue Tooth technology is an available option. 5 year warranty.