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Calculators calculator Electronics 12digitscalculator officesupplies schoolsupplies Moneydetector casiocalculator scientific calculator Solar Computer 417 Kinds Of Multifunctional Dual Power Environmental Protection Plastic Student Function Scientific Calculator Name: Solar 417 Multifunctional Student Function Calculator Model: OS-991ES PLUS Material: environmentally friendly ABS plastic Specification: 162 * 80 * 14mm Note: Buyers need to bring their own dry batteries Electronic calculator product description: Display screen: Using Japanese LCD, the font is real, clear, dark, and no shadow. Tainengyang: Using American photoelectric technology, the photoelectric conversion efficiency is good, can provide sufficient power, and is more convenient to use. Metal surface: Use thicker aluminum material for better protection. Number of keys: Durable ink, durable. Circuit board: Corrosion-resistant plate, carbon oil with good conductivity and strong adhesion IC: Fast IC, fast computing speed, low energy consumption Keypad glue: Made with new materials and high-quality silicone oil, it feels more comfortable Lens: Use abrasion-resistant acrylic material (organic material) with excellent transparency. Reeling: It has passed the salt spray test using the retort process. Banma Line: Meets European environmental standards. AA battery: Non-leakage nickel-metal hydride environmental protection battery, with more powerful energy and long life. Product bag: PE material Color box: environmentally friendly ink printing, polishing process, instead of the traditional attached film, can be completely decomposed after recycling Outer packaging: KA reinforced paper.