Setup, Compatibility & Care
Setting up the calculator is straightforward; simply remove the protective film from the screen and ensure the battery is seated correctly. The device uses one LR1130 battery, which is fully compatible with common GP 189 equivalents. To maintain longevity, keep the device away from extreme temperatures and moisture. If the display appears faint, even in bright light, replace the button cell battery by unscrewing the back panel. Clean the chassis and keys with a slightly damp, lint-free cloth to maintain a professional appearance and tactile responsiveness.