DoubleCheck – Talking Calculator

DoubleCheck: Your all-in-one talking calculator for complex calculations, conversions, and timekeeping.

SKU: 21000 Category:


Meet DoubleCheck, the advanced talking calculator that goes beyond basic arithmetic. With DoubleCheck, you can effortlessly perform calculations involving percentages, squares, powers, square roots, and even store or add values to the memory bank. This makes DoubleCheck a full-featured business calculator that allows users to easily calculate complex financial metrics such as compound interest, present value, and annuities.

What sets DoubleCheck apart is its versatile conversion mode, which allows users to seamlessly switch between different units of measurement for volume, length, weight, temperature, and even currencies. With just a few keystrokes, DoubleCheck simplifies the conversion process, providing a quick and efficient solution to everyday measurement challenges.

And DoubleCheck is not just about numbers – it is a multi-functional tool that also speaks and displays the time and date on demand. This added feature enhances its utility and makes it a valuable companion for a wide range of tasks. With DoubleCheck, you get more than just a calculator; you get a sophisticated tool that simplifies calculations, conversions, and timekeeping in one compact device.


  • 10 memory locations
  • Reciprocal value
  • Percentage calculation
  • Squaring, exponentiation, and drawing a root
  • Calculate compound interest, present value, and annuities
  • Conversion of currency, temperature, volumes, length and weight
  • Date and time with alarm function
  • Key lock

Technical data

  • Dimensions: 154 x (13-21) x 64 mm
  • 6 volume levels
  • Audio jack: 3.5 mm jack
  • Weight: 125 g (including batteries)
  • Power supply: 2 x 1.5V AAA batteries
  • 10-digit LCD display (7 mm)
  • Key lock
  • Color: blue/white

Scope of delivery

  • 1 DoubleCheck calculator
  • 2 x 1.5V AAA (LR03) batteries
  • 1 User Guide Printed

Additional information


Croatian, Czech, Danish, Dutch, English, English – US, Estonian, Finnish, French, German, Hungarian, Italian, Japanese, Norwegian, Polish, Portuguese, Romanian, Russian, Slovak, Slovenian, Spanish, Swedish


Pdf Icon User Guide English


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