- desktop calculator from the greener@work series, with the "Blue Angel" certificate
- energy saving: only solar power, works even at 50 lux of illumination, automatic shutdown
- made from 80% recycled plastic
- large 12-digit single-line LCD display
- rounded edges and raised screen for better viewing and solid plastic keys
- 3 memory keys, % key, square root calculation, +/- key, double zero, delete key (deletes the last digit entered)
- 5 year warranty
- environmentally friendly packaging in recycled cardboard without an additional plastic bag
- weight 96 g
- dimensions 14.6 x 10.4 x 3.3 cm

It is important to know

Before purchasing the Maul ECO 650 desktop calculator, it is essential to consider how demanding your daily office tasks are and how much functionality you really need. With this type of device, we often overlook the balance between ease of use and upgrade options depending on work needs. The right choice will make your work easier in the long run if you pay attention to some less obvious differences.

• Basic models like this are particularly effective for routine office calculations, but you can quickly run into limitations when it comes to more advanced tasks or more complex financial processing.
• Combined power supply allows for more flexible use – there is no dependence on just one type of power source, which is useful when moving jobs or occasionally working in the field.
• The lack of printing means you can't directly archive or check calculations on paper, which can be a significant obstacle in more demanding accounting environments.
• Since it is a basic model, the feature set is limited to basic operations; if you expect to work with more complex calculations or advanced features, check whether you actually need it.

Source of editorial recommendations: general verifiable guidelines for product selection.

In practice

🟢 Basic office calculations

Very convenient – the calculator is tailored for routine daily calculations where advanced features are not essential.

🟡 Accounting and bookkeeping

Suitable with limitations – works for simpler tasks, but the lack of printing options presents a barrier to traceability of calculations in more serious financial environments.

🔴 Financial analytics

Less suitable – due to its limited set of functions and lack of output results, it is less useful for in-depth financial analyses.

🔴 Technical and statistical calculations

Less suitable – basic design and lack of advanced mathematical functions do not allow for efficient solving of more complex calculations.

🟢 Mobile work

Very convenient - the combined power supply allows reliable use even where there is no constant access to an electrical outlet.

Answers to frequently asked questions

Does the calculator allow you to print results?

No, the Maul ECO 650 model does not have a calculation printing function.

What kind of power supply does this calculator provide?

It offers a combination power supply, which means you can use it with multiple types of power sources.

Is this model suitable for more complex financial or technical calculations?

No, it is primarily intended for basic office tasks and does not have advanced features for complex calculations.

Can I use the calculator outside the office?

Yes, due to the combined power supply, it is also useful when working in different locations without constant access to electricity.

Description updated: October 2026

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