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Retro mechanical-switch desktop calculator with 12-digit angled LCD and round typewriter keys

Mechanical Switch Calculator SD-1299 12-Digit Dual Power

SKU CH-1HD7-G26T0

A desktop calculator with mechanical-switch keys, 12-digit angled LCD and solar-plus-battery power

  • Tactile mechanical-switch feel speeds up data entry
  • Dual solar and battery power with auto-off extends runtime
  • 12-digit LCD tilted at 15° for clear visibility
  • Typewriter-style round keys add retro desk appeal
  • Anti-slip foot pads keep the calculator steady during fast use

Mechanical Switch Calculator SD-1299

The SD-1299 is a 12-digit desktop calculator built with mechanical switch keys that deliver tactile feedback and an audible click. It targets students, office workers and home users who prefer a responsive, typewriter-style feel for daily arithmetic tasks.

Dual Power and 15° Angled Display

Solar and battery operation keeps the unit running without frequent battery changes, while an auto-off function activates after 6 minutes of inactivity. The large LCD screen tilts at 15° for clear visibility, and anti-slip foot pads hold the calculator steady during rapid entry.

Sustained Use Comfort and Stability

High-quality ABS construction and a spring-loaded key mechanism reduce wrist strain during long sessions. The compact, lightweight body suits both desktop and handheld use, and the included AAA battery ensures the calculator is ready for continuous operation straight away.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 73% of the 3,030 comparable items (median $54.99).

Specifications

In the box
Included itemsNo

Questions about this item

How many digits can the LCD display show at once?

The display shows 12 digits on a large LCD panel tilted at 15 degrees for easy reading.

Does the mechanical-switch keyboard click loudly enough to disturb colleagues in a quiet office?

The keys produce a distinct clicking sound with tactile feedback, similar to a mechanical keyboard, so it is audible in a silent room.

What battery does the calculator need to run when there is no light?

It uses a single AAA battery, which is included, and switches automatically between solar and battery power.

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