Calculator Desktop Genie 840 B

The Genie 840 B is a compact desktop calculator with a large, tilted 10-digit single-line display designed for clear readability. It combines a blue and white modern finish with durable plastic keys that are easy to operate and clean. The calculator supports dual power—solar operation in sufficient light and automatic switch-over to battery when light is insufficient; a battery is included.

Advantages

The angled 10-digit display improves visibility when placed on a desk. Dual-Power operation ensures continuous use in varying lighting conditions. Plastic keys are resilient and simple to maintain, and the compact footprint saves desk space while providing essential calculation functions.

Suitable for

• General office calculations and accounting basics
• School homework and classroom use
• Home budgeting and everyday arithmetic

Key specifications

• Model: Genie 840 B (MPN: 12260, EAN: 4015468122603)
• Display: 10-digit, single-line, tilted
• Power supply: Dual-Power (solar + battery); battery included
• Keys: Plastic, easy-to-clean
• Functions: Basic arithmetic (+, −, ×, ÷), square root, percentage, 4-key memory (M+, M−, MR, MC)
• Color: Blue and white

How to use

Place the calculator on a flat surface with the display angled toward you for best visibility. Use the numeric and operation keys for arithmetic; press the square root or percentage keys for respective calculations. Use the memory keys to store and recall values: M+ to add to memory, M− to subtract from memory, MR to recall memory, and MC to clear memory. The device will use solar power when light is sufficient and switch automatically to the included battery when needed.

Usage recommendations

Keep the solar panel unobstructed and avoid exposing the calculator to prolonged direct sunlight or moisture. Clean the plastic keys with a soft, dry or slightly damp cloth; do not use abrasive cleaners. Replace the battery when the display dims or the device fails to switch reliably between power sources.