--- product_id: 574800718 title: "Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons" brand: "mr. pen" price: "£20.15" currency: GBP in_stock: true category: "Mr. Pen" url: https://www.desertcart.co.uk/products/574800718-mr-pen-mechanical-switch-calculator-12-digits-large-lcd-display store_origin: GB region: United Kingdom --- # Auto power-off battery saver 12-digit precision Mechanical switch keys Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons **Brand:** mr. pen **Price:** £20.15 **Availability:** ✅ In Stock ## Summary > 🧮 Elevate your calculations with precision and style—because every click counts! ## Quick Answers - **What is this?** Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons by mr. pen - **How much does it cost?** £20.15 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/574800718-mr-pen-mechanical-switch-calculator-12-digits-large-lcd-display) ## Best For - mr. pen enthusiasts ## Why This Product - Trusted mr. pen brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Click with Confidence:** Mechanical switch buttons deliver a tactile, satisfying click for faster, more accurate data entry—goodbye missed keystrokes! - • **Compact Yet Commanding:** Sleek 6.2 x 4.4 inch design fits neatly on any desk without sacrificing usability or visibility. - • **Smart Power Management:** Runs on a single AAA battery with an automatic shutdown after 10 minutes to maximize battery life and reliability. - • **Big Buttons, Big Impact:** Oversized, sensitive keys designed for effortless pressing, perfect for busy professionals and multitaskers. - • **Precision at Your Fingertips:** 12-digit large LCD display ensures every number is crystal clear, reducing errors in your calculations. ## Overview The Mr. Pen Mechanical Switch Calculator combines a large 12-digit LCD display with tactile mechanical keys for a premium, efficient calculation experience. Its big buttons and compact design make it ideal for office, school, or home use. Powered by a single AAA battery with smart auto-shutdown, it balances portability with long-lasting performance, making it a reliable tool for professionals who demand accuracy and speed. ## Description Mr. Pen 12-digit calculator is perfect for completing basic numerical calculations, making it ideal for office, primary school, market, or even home use. It features big, sensitive keys that are easy to press down and offer quick data entry.The mechanical switch buttons offer a responsive and satisfying click with each press, similar to a mechanical keyboard, improving the overall user experience and precision of data entry. Equipped with essential functions like memory recall, percentage calculation, and more, it meets a variety of computational needs.Mr. Pen calculator is portable and small in size at 6.2 x 4.4 inches, so it doesn't take up much desk space but is still comfortably sized for easy usage. It also has a large 12-digit display, increasing its visibility from any angle.Operating on just one AAA battery (not included), this calculator is designed with an automatic shutdown feature that activates after 10 minutes of inactivity, conserving battery life and ensuring longevity.Mr. Pen calculator is the perfect tool for quickly dealing with everyday calculation problems in various settings such as schools, offices, or even at home! It offers a fast, efficient, and user-friendly experience that makes it an ideal choice for anyone looking for a reliable calculator. ## Features - Mr. Pen 12-digit calculator is perfect for completing basic numerical calculations, making it ideal for office, primary school, market, or even home use. It features big, sensitive keys that are easy to press down and offer quick data entry. - The mechanical switch buttons offer a responsive and satisfying click with each press, similar to a mechanical keyboard, improving the overall user experience and precision of data entry. Equipped with essential functions like memory recall, percentage calculation, and more, it meets a variety of computational needs. - Mr. Pen calculator is portable and small in size at 6.2 x 4.4 inches, so it doesn't take up much desk space but is still comfortably sized for easy usage. It also has a large 12-digit display, rising its visibility from any angle. - Operating on just one AAA battery (not included), this calculator is designed with an automatic shutdown feature that activates after 10 minutes of inactivity, conserving battery life and ensuring longevity. - Mr. Pen calculator is the perfect tool for quickly dealing with everyday calculation problems in various settings such as schools, offices, or even at home! It offers a fast, efficient, and user-friendly experience that makes it an ideal choice for anyone looking for a reliable calculator. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C2Y24N2C | | Best Sellers Rank | #49,031 in Office Products ( See Top 100 in Office Products ) #168 in Basic Calculators | | Brand | Mr. Pen | | Calculator Type | Standard Function | | Color | Blue | | Compatible Devices | Most devices with a standard calculator function, including computers, laptops, and smartphones | | Customer Reviews | 4.6 4.6 out of 5 stars (2,066) | | Display Type | LCD | | Enclosure Material | Plastic | | Item Dimensions L x W | 15.7L x 11.2W centimeters | | Manufacturer | Mr. Pen | | Mfr Part Number | WLCT001M313 | | Model Name | mechanical switch calculator | | Model Number | WLCT001M313 | | Power Source | Battery Powered | | Screen Size | 4.4 Inches | | UPC | 840316909518 | ## Product Details - **Brand:** Mr. Pen - **Calculator Type:** Standard Function - **Colour:** Blue - **Power source:** Battery Powered - **Screen size:** 4.4 Inches ## Images ![Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons - Image 1](https://m.media-amazon.com/images/I/81C3M-f93cL.jpg) ![Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons - Image 2](https://m.media-amazon.com/images/I/81+61dygBXL.jpg) ![Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons - Image 3](https://m.media-amazon.com/images/I/71lYFktSckL.jpg) ![Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons - Image 4](https://m.media-amazon.com/images/I/81KbxJ7ThjL.jpg) ![Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons - Image 5](https://m.media-amazon.com/images/I/71rXw1adXlL.jpg) ## Available Options This product comes in different **Color** options. ## Frequently Bought Together - Mr. Pen- Mechanical Switch Calculator, 12 Digits, Large LCD Display, Blue Calculator Big Buttons, Mechanical Calculator, Calculators Desktop Calculator, Cute Calculator, Aesthetic Calculator Blue - Linbsunne Ballpoint Pens Black Medium Point 1mm Pen with Super Soft Grip Ball Point Pen for Men Women Retractable Pens (gold-12 pcs) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/574800718-mr-pen-mechanical-switch-calculator-12-digits-large-lcd-display](https://www.desertcart.co.uk/products/574800718-mr-pen-mechanical-switch-calculator-12-digits-large-lcd-display) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-30*