--- product_id: 44215738 title: "Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black)" brand: "helect" price: "868882₫" currency: VND in_stock: true reviews_count: 13 category: "Helect" url: https://www.desertcart.vn/products/44215738-helect-2-line-engineering-scientific-calculator-suitable-for-school-business store_origin: VN region: Vietnam --- # 1 & 2 variable stats 240 scientific functions 12-digit 2-line HD display Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black) **Brand:** helect **Price:** 868882₫ **Availability:** ✅ In Stock ## Summary > 🧠 Elevate your calculations—because precision is the new power move. ## Quick Answers - **What is this?** Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black) by helect - **How much does it cost?** 868882₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/44215738-helect-2-line-engineering-scientific-calculator-suitable-for-school-business) ## Best For - helect enthusiasts ## Why This Product - Trusted helect brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last, Ready to Protect:** Durable sliding case shields your calculator from daily wear and tear. - • **Ergonomic Design Meets Precision:** Comfort grip and responsive buttons keep you focused and efficient. - • **Versatile Modes for Every Scenario:** Switch seamlessly between degrees, radians, grads, and engineering notation. - • **Dual-Line Display for Instant Clarity:** See your input and result simultaneously—no more guesswork. - • **Master Complex Calculations Effortlessly:** 240 advanced scientific functions to power through any problem. ## Overview The Helect 2-Line Engineering Scientific Calculator is a professional-grade tool featuring 240 scientific functions, a crisp 12-digit dual-line LCD display, and ergonomic design. Ideal for students and professionals alike, it supports complex statistical calculations and multiple angle modes, all protected by a durable sliding case for everyday reliability. ## Description Professional grade scientific calculator with 240 scientific functions. Easily handles 1 and 2 variable statistical calculations, three angle modes (degrees, radians, and grads), and scientific/engineering notation modes 12-digit widescreen HD display. 2-line display shows inputs and results at the same time. Works efficiently and makes no mistake Meets the ergonomics design and offers a comfortable grip. Responsive buttons, clear numbers, and scratch-proof Solid sliding protective case covers either side of the calculator. Protects buttons and the device body Package includes: Scientific Calculator*1, instructions Review: Student - Works great Review: Simple to use - I've had this calculator for about 5 years, and only had to replace it because the two small button-type batteries in it finally died. It had a small cover that could be opened for battery replacement, but the cost of two new batteries was less than the cost of the new calculator. This new one is almost exactly identical to the old one, except it doesn't have the battery access cover. I imagine I could replace the batterie sin the new one by removing six tiny screws and opening the entire back of the unit, if needed. I am a recently retired engineer, and used the calculator daily since I bought it. It is a lot simpler to use then many high-priced calculators from well known manufacturers. If you don't need graphing functions, this one is a good deal. ## Features - Professional grade scientific calculator with 240 scientific functions. Easily handles 1 and 2 variable statistical calculations, three angle modes (degrees, radians, and grads), and scientific/engineering notation modes - 12-digit widescreen HD display. 2-line display shows inputs and results at the same time. Works efficiently and makes no mistake - Meets the ergonomics design and offers a comfortable grip. Responsive buttons, clear numbers, and scratch-proof - Solid sliding protective case covers either side of the calculator. Protects buttons and the device body - Package includes: Scientific Calculator*1, instructions ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MCQMORK | | Best Sellers Rank | #33,045 in Office Products ( See Top 100 in Office Products ) #34 in Scientific Calculators | | Brand | Helect | | Calculator Type | Engineering/Scientific | | Color | Black | | Customer Reviews | 4.4 out of 5 stars 21,238 Reviews | | Display Type | LCD | | Enclosure Material | Plastic | | Item Dimensions L x W | 0.63"L x 0.33"W | | Item Weight | 180 Grams | | Manufacturer | Helect | | Mfr Part Number | H-1002- | | Model Number | H-1002- | | Number of Batteries | 1 AA batteries required. | | Power Source | Battery Powered | | Screen Size | 6.3 Centimeters | ## Product Details - **Brand:** Helect - **Calculator Type:** Engineering/Scientific - **Color:** Black - **Power Source:** Battery Powered - **Screen Size:** 6.3 Centimeters ## Images ![Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black) - Image 1](https://m.media-amazon.com/images/I/61qCc8HEOcL.jpg) ![Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black) - Image 2](https://m.media-amazon.com/images/I/61IWeNOmvPL.jpg) ![Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black) - Image 3](https://m.media-amazon.com/images/I/71n-Y1tqg3L.jpg) ![Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black) - Image 4](https://m.media-amazon.com/images/I/715jj3isiLL.jpg) ![Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black) - Image 5](https://m.media-amazon.com/images/I/615IYP6F4UL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: does it do mean and standard deviation?** A: The answer to this question is perhaps. The problem is the instruction booklet does not go with the calculator. Keys mentioned in the booklet are not present on the actual calculator and that includes buttons necessary for mean and SD calculations. I have spent a lot of time on this calculator and so far have not been bale to get mean or SD. The Chinese manufacturers need to produce an instruction booklet that refers to the particular calculator in question. As it is I cannot recommend this calculator. **Q: How do you change it to radian mode?** A: Press the key Mode/clr key several times until DEG RAD GRA appears. Then press the number under the word RAD. **Q: I have a function question. if i want to square root 9, do i input 9 1st, or do i select the square root function 1st?** A: Select the square root function first. **Q: can you actually see the parentheses when you press it** A: Yes. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Student *by P***N on October 16, 2025* Works great ### ⭐⭐⭐⭐⭐ Simple to use *by C***G on July 1, 2021* I've had this calculator for about 5 years, and only had to replace it because the two small button-type batteries in it finally died. It had a small cover that could be opened for battery replacement, but the cost of two new batteries was less than the cost of the new calculator. This new one is almost exactly identical to the old one, except it doesn't have the battery access cover. I imagine I could replace the batterie sin the new one by removing six tiny screws and opening the entire back of the unit, if needed. I am a recently retired engineer, and used the calculator daily since I bought it. It is a lot simpler to use then many high-priced calculators from well known manufacturers. If you don't need graphing functions, this one is a good deal. ### ⭐⭐⭐⭐⭐ Make a great buy *by K***S on April 6, 2026* My son loves it ## Frequently Bought Together - Helect 2-Line Engineering Scientific Calculator, Suitable for School and Business (Black) - BIC Brite Liner Highlighters, Chisel Tip, 5-Count Pack of Highlighters Assorted Colors, Ideal Highlighter Set for Organizing and Coloring - BIC Xtra-Life Mechanical Pencil, Clear Barrel, Medium Point (0.7mm), 10-Count, Packaging May Vary --- ## 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.vn/products/44215738-helect-2-line-engineering-scientific-calculator-suitable-for-school-business](https://www.desertcart.vn/products/44215738-helect-2-line-engineering-scientific-calculator-suitable-for-school-business) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-12*