--- product_id: 592227763 title: "New, Two Line Display, Desktop Calculator. History Function- 30 Memories, Calculator with Large LCD for Home & Office Use, 4.5×7 inch (Silver)" brand: "unione" price: "NT$1139" currency: TWD in_stock: true reviews_count: 12 category: "Unione" url: https://www.desertcart.tw/products/592227763-new-two-line-display-desktop-calculator-history-function-30-memories store_origin: TW region: Taiwan --- # Large 4-inch two-line LCD Dual power: solar + AAA battery 30-memory history recall New, Two Line Display, Desktop Calculator. History Function- 30 Memories, Calculator with Large LCD for Home & Office Use, 4.5×7 inch (Silver) **Brand:** unione **Price:** NT$1139 **Availability:** ✅ In Stock ## Summary > 🧮 Master your numbers with clarity and speed—because your desk deserves the best calculator. ## Quick Answers - **What is this?** New, Two Line Display, Desktop Calculator. History Function- 30 Memories, Calculator with Large LCD for Home & Office Use, 4.5×7 inch (Silver) by unione - **How much does it cost?** NT$1139 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/592227763-new-two-line-display-desktop-calculator-history-function-30-memories) ## Best For - unione enthusiasts ## Why This Product - Trusted unione brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Commanding:** Sleek 4.5×7 inch design with large keys and screen fits perfectly on any professional workspace. - • **Recall & Edit Past Entries:** Access up to 30 previous calculations to review, correct, or reuse—boosting your workflow efficiency. - • **Reliable Dual Power Source:** Solar energy backed by AAA battery ensures uninterrupted performance, whether at your desk or on the go. - • **Built for Precision & Speed:** Engineered IC technology minimizes input errors even during rapid key presses—perfect for fast-paced office tasks. - • **Effortless Multi-Line Calculations:** Two-line display lets you see both input and result simultaneously—no more guesswork or errors. ## Overview The UNIONE TL-250 desktop calculator features a large 4-inch two-line LCD display, enabling simultaneous input and result viewing. It supports a 30-memory history function for easy recall and editing of past calculations. Powered by both solar energy and a AAA battery, it ensures reliable use in any lighting condition. Compact and lightweight at 4.5×7 inches and 153g, it’s designed for professional home and office environments, combining precision engineering with user-friendly features. ## Description desertcart.com : New, Two Line Display, Desktop Calculator. History Function- 30 Memories, Calculator with Large LCD for Home & Office Use, 4.5×7 inch (Silver) : Office Products Review: The perfect calculator - I have been looking for a calculator with this specific set of features for literally years. I've already bought another one because I'm so sick of finding the perfect thing and then I can't get a replacement 5 years later when the manufacturer has gone out of business. Hoping this review helps prevent the last part too. I've been using my TI-83 from school at my job because I simply couldn't part with the parentheses and ability to see multiple lines. However, I've also been wanting a calculator that can sit on my desk to run quick calculations without the 5 billion other functions a graphing calc has, and to see the display without picking it up. Unfortunately, every "large format" desk calculator is just the basic accounting one that I find too limiting in features. Printing calculators solve some of my problems since you can refer to past calculations and check your work, but I just hate using them. Above standard features are: 1) Multiple lines - ability to see what I typed in is CRITICAL so I can check my work, especially once you start doing more complicated calculations involving parentheses. Basically like tape printing calculator, but without the paper! 2) Parentheses - I don't know if it's my line of work, or just the way my brain works, but I find myself constantly dividing a sum of numbers by another sum of numbers, requiring parentheses if I don't want to write down the numerator and denominator. 3) Arrow left/right w/ insert & delete - many calculators have a backspace, but sure can be nice to not have to retype a whole equation if you left out a 0 in the first of several numbers. This feature is critically important with the next feature though. 4) Arrow up/down - this scrolls through past calculations. While this would be useful just to check work, you can actually also go back and edit/add/delete numbers and resolve. This is such big quality of life feature, I'm surprised it's not more common. The only improvements that I feel could be made: 1) More lines - I would actually prefer 4 or 5 lines, all a larger version of the 1st row. Again very similar to the TI calculators. 2) Reuse prev calculation as a variable - I know the memory function (MRC) serves the same purpose, but I find using it unintuitive. I much prefer the TI's ANS feature so you can insert the previous result anywhere in your new equation. You can use the arrow up function of this one to find a previous calculation, but if you want to reuse it's result, it has to be at the front of the next equation you're using the result in. Not helpful if I'm trying to divide by a previous result. I guess since this calculator is already going out on limb they wanted to keep it as familiar as possible to the standard accounting desk calculator and it's memory button, but still hate it. 3) Water-resistant - Most probably don't need it, but we use large desk calculators in the lab since it's easy to hit the larger buttons with gloves on and doesn't matter if we spill (plus can be rinsed off in the sink), and easy to read while standing. The poor-man's solution is to put in a plastic ziplock, but it doesn't look professional and eventually gets dirty or tears. The Victor 99901 is our favorite calculator in the lab for those who need something similar: https://www.desertcart.com/gp/product/B002XQ23IG/?th=1. This calculator's features would be great in a lab or other dirty setting. 4) Display could be angled a bit more. The LCD can be just a bit hard to see when the calculator is further from you and you're sitting. Review: Display light. Large keys. Checkbook balancing - Very handy. Light in display. Not expensive ## Features - If you press the key too fast, it can cause an error because TL-250 used IC for engineering calculators. - Size: 4.5×7 inch, 153g, Two way power Two Line Display, Desktop Calculator - History Function - The calculated record can be retrieved and corrected. ( About 30 memories ) - Turn the calculator upside down and remove the battery History will be deleted after three seconds. - Solar energy and battery (AAA 1.5V) - Standard Function Desktop Business Calculator with LCD Display Screen for Home & Office Use ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CKHJXRDS | | Best Sellers Rank | #59,359 in Office Products ( See Top 100 in Office Products ) #133 in Basic Office Calculators | | Brand | UNIONE | | Calculator Type | Business | | Color | SILVER | | Customer Reviews | 4.0 4.0 out of 5 stars (899) | | Display Type | LCD | | Enclosure Material | Plastic | | Item Dimensions L x W | 4.5"L x 7"W | | Manufacturer | UNIONE COMMERCE | | Mfr Part Number | TL-250 | | Model Name | TL-250 | | Model Number | TL-250 | | Number of Batteries | 1 AAA batteries required. | | Power Source | Solar Powered | | Screen Size | 4 Inches | | Warranty Description | 2 years | ## Product Details - **Brand:** UNIONE - **Calculator Type:** Business - **Color:** SILVER - **Power Source:** Solar Powered - **Screen Size:** 4 Inches ## Images ![New, Two Line Display, Desktop Calculator. History Function- 30 Memories, Calculator with Large LCD for Home & Office Use, 4.5×7 inch (Silver) - Image 1](https://m.media-amazon.com/images/I/71W2W4F9H9L.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ The perfect calculator *by R***. on November 18, 2023* I have been looking for a calculator with this specific set of features for literally years. I've already bought another one because I'm so sick of finding the perfect thing and then I can't get a replacement 5 years later when the manufacturer has gone out of business. Hoping this review helps prevent the last part too. I've been using my TI-83 from school at my job because I simply couldn't part with the parentheses and ability to see multiple lines. However, I've also been wanting a calculator that can sit on my desk to run quick calculations without the 5 billion other functions a graphing calc has, and to see the display without picking it up. Unfortunately, every "large format" desk calculator is just the basic accounting one that I find too limiting in features. Printing calculators solve some of my problems since you can refer to past calculations and check your work, but I just hate using them. Above standard features are: 1) Multiple lines - ability to see what I typed in is CRITICAL so I can check my work, especially once you start doing more complicated calculations involving parentheses. Basically like tape printing calculator, but without the paper! 2) Parentheses - I don't know if it's my line of work, or just the way my brain works, but I find myself constantly dividing a sum of numbers by another sum of numbers, requiring parentheses if I don't want to write down the numerator and denominator. 3) Arrow left/right w/ insert & delete - many calculators have a backspace, but sure can be nice to not have to retype a whole equation if you left out a 0 in the first of several numbers. This feature is critically important with the next feature though. 4) Arrow up/down - this scrolls through past calculations. While this would be useful just to check work, you can actually also go back and edit/add/delete numbers and resolve. This is such big quality of life feature, I'm surprised it's not more common. The only improvements that I feel could be made: 1) More lines - I would actually prefer 4 or 5 lines, all a larger version of the 1st row. Again very similar to the TI calculators. 2) Reuse prev calculation as a variable - I know the memory function (MRC) serves the same purpose, but I find using it unintuitive. I much prefer the TI's ANS<2nd+(-)> feature so you can insert the previous result anywhere in your new equation. You can use the arrow up function of this one to find a previous calculation, but if you want to reuse it's result, it has to be at the front of the next equation you're using the result in. Not helpful if I'm trying to divide by a previous result. I guess since this calculator is already going out on limb they wanted to keep it as familiar as possible to the standard accounting desk calculator and it's memory button, but still hate it. 3) Water-resistant - Most probably don't need it, but we use large desk calculators in the lab since it's easy to hit the larger buttons with gloves on and doesn't matter if we spill (plus can be rinsed off in the sink), and easy to read while standing. The poor-man's solution is to put in a plastic ziplock, but it doesn't look professional and eventually gets dirty or tears. The Victor 99901 is our favorite calculator in the lab for those who need something similar: https://www.amazon.com/gp/product/B002XQ23IG/?th=1. This calculator's features would be great in a lab or other dirty setting. 4) Display could be angled a bit more. The LCD can be just a bit hard to see when the calculator is further from you and you're sitting. ### ⭐⭐⭐⭐⭐ Display light. Large keys. Checkbook balancing *by I***Y on January 13, 2026* Very handy. Light in display. Not expensive ### ⭐⭐⭐⭐ Nice Lit Up Display, Only One Sound, Not Musical *by S***E on September 18, 2025* It seems to be a nice calculator but I was disappointed that it's not a musical calculator like my 1970s school days had. Its the same sound. I'm keeping it though because its easy to read and I like the dual power as opposed to just solar. ## Frequently Bought Together - New, Two Line Display, Desktop Calculator. History Function- 30 Memories, Calculator with Large LCD for Home & Office Use, 4.5×7 inch (Silver) - Desktop Calculator Large Display Big Buttons with 12 Digits 2-line LCD, Dual Solar Power and Battery, Calculator with Tax and Check Function for Office, Home, School and Business Large Size（OA-608） - Sharp El-1501 Compact Cordless Paperless Large 12-Digit Display Desktop Printing Calculator That Utilizes Printing Calculator Logic --- ## 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.tw/products/592227763-new-two-line-display-desktop-calculator-history-function-30-memories](https://www.desertcart.tw/products/592227763-new-two-line-display-desktop-calculator-history-function-30-memories) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-04-22*