OSALO Scientific Calculator 401 Function 10+2 Digits Written Display Solar and Battery Calculator Protective Case for School Black (OS 991MS 2nd Edition)

Price: €29.99 - €19.99
(as of Jan 09, 2026 08:11:28 UTC – Details)

From the brand

OSALO Brand Story Concept

OSALO has quickly become a go-to brand for consumers who want products that are both reliable and visually appealing.

OSALO ist eine Marke, bei der sich alles um Funktionalität und Design dreht. Sie wurde von einem Team von Ingenieuren gegründet, die hochwertige Taschenrechner entwickeln wollten, die gleichzeitig stilvoll und einfach zu bedienen sind. Egal, ob Sie studieren, berufstätig sind oder einfach nur einen Taschenrechner für den täglichen Gebrauch benötigen, OSALO hat das perfekte Produkt für Ihre Bedürfnisse.

OSALO-Rechner Mathe meistern

OSALO-Rechner Mathe meistern

OSALO Taschenrechner Groß

OSALO Taschenrechner

Rechner für Neuankömmlinge

OSALO-Rechner Mathe meistern

OSALO-Rechner Mathe meistern

Beutel mit Reißverschluss

Beutel mit Reißverschluss

Beutel mit Reißverschluss

Batteries ‏ : ‎ 1 LR44 batteries required. (included)
Product Dimensions ‏ : ‎ 16.4 x 1.7 x 0.1 cm; 140 g
Date First Available ‏ : ‎ 22 Sep 2023
Manufacturer ‏ : ‎ OSALO
ASIN ‏ : ‎ B0CJLGJT6R
Item model number ‏ : ‎ OSALO CO.,LTD.
Country of origin ‏ : ‎ China
Guaranteed software updates until ‏ : ‎ unknown
Best Sellers Rank: 1,826 in Stationery & Office Supplies (See Top 100 in Stationery & Office Supplies) 17 in Scientific Calculators
Customer reviews: 4.5 4.5 out of 5 stars (2,521) var dpAcrHasRegisteredArcLinkClickAction; P.when(‚A‘, ‚ready‘).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‚acrLink-click-metrics‘, ‚click‘, { „allowLinkDefault“: true }, function (event) { if (window.ue) { ue.count(„acrLinkClickCount“, (ue.count(„acrLinkClickCount“) || 0) + 1); } } ); } }); P.when(‚A‘, ‚cf‘).execute(function(A) { A.declarative(‚acrStarsLink-click-metrics‘, ‚click‘, { „allowLinkDefault“ : true }, function(event){ if(window.ue) { ue.count(„acrStarsLinkWithPopoverClickCount“, (ue.count(„acrStarsLinkWithPopoverClickCount“) || 0) + 1); } }); });

Scientific and technical school calculator with 401 functions: Do you need a calculator that can not only add and subtract? The OS-991MS II school calculator contains 401 functions that can always help you, whether at school, study or at work. It guides you through every math challenge: fractions, matrix calculations, statistics, analysis, complex numbers, equation calculations, standard deviations, vector calculations, permutations, and combinations. The included instructions will help you find and use these functions.
Contrast adjustment function: the contrast adjustment function allows users to easily modify the contrast of the screen to achieve optimal display quality. Screen darkening reduces eye strain and brightens up to deliver clearer visuals, improving computing performance.
The two-line display: The special thing about the OS-991MS II school calculator is the clear and intuitive display. Compared to conventional calculators, the input and operations on OS-991MS II is much easier to read — 2 display lines display inputs and calculation results at the same time, making checking the entire calculation process easier!
Dual power school calculator: A great advantage of this calculator is that it works in solar operation. It is the perfect choice for environmentalists! However, the calculator can also be powered by a battery if sufficient light is not available.
【Ultra lightweight and portable】Weight: 4.97 ounces (141 grams); Dimensions: 164 x 80 x 17 mm / 6.4 x 3.15 x 0.67 inches; Material: ABS plastic. This handy scientific calculator also comes with a protective slider so it is well protected.