Desktop calculator Donau K-DT4121-18 12-digit display, dimensions 190×143×40 mm, blue

Donau desktop calculator K-DT4121-18 is a compact, table-top calculator with a 12-digit display and a blue casing. With dimensions of 190×143×40 mm it is designed to occupy minimal space on an office desk while offering clear numeric visibility for everyday calculations. The unit supports basic arithmetic functions and numeric entry, providing a stable base for routine accounting and administrative tasks.

Advantages

The calculator combines a 12-digit display with a compact housing to balance readability and space efficiency. Its stable construction and tactile keys are suited for frequent numeric input. The blue finish offers a discreet yet professional appearance suitable for business environments. The device operates without complex setup and is ready for immediate use on a tabletop.

Suitable for

• Basic accounting and bookkeeping tasks
• Invoice and receipt verification at points of sale
• Office desktop use for administration and data entry
• Reception desks and customer service counters

Key specifications

• Display: 12-digit numeric display for extended values
• Dimensions: 190 × 143 × 40 mm for compact desktop placement
• Housing color: blue, suitable for professional settings
• Functionality: basic arithmetic operations and numeric entry
• Form factor: stable tabletop unit designed for frequent use

How to use

Place the calculator on a flat, stable tabletop surface within easy reach. Use the numeric keypad for entering figures and the arithmetic keys to perform addition, subtraction, multiplication and division. Clear entries with the designated clear key and check results on the 12-digit display. The unit requires minimal configuration—simply power it on according to the manufacturer’s instructions and start entering numbers.

Usage recommendations

For reliable long-term use, avoid exposing the calculator to liquids and extreme temperatures, and keep the keypad free of dust. Position the device so the display is easily readable from your normal working posture and use regular cleaning with a dry, soft cloth to maintain visibility and key responsiveness.