SIZE: 7 3/4" x 5 3/4" x 1" (cover on) COLOR: Black. Display is monochrome. MATERIAL: ABS plastic (case); durable, hard plastic keys. CONDITION: Excellent pre-owned. Nearly non-visible scuffs on rear of unit. REMARKS: Slide-off protective cover. Anti-slip rubber on both sides. Contains backup battery (LR44, included); takes four AAA batteries (not included). From the manufacturer: "TI graphing calculators are durable, multi-functional educational tools that meet students’ critical math and science requirements from high school through college." ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Why buy from Flying.Squirrel.Emporium? -Lightning-fast shipping - Small business using climate-positive FinTech payment systems & fully recyclable and/or compostable shipping materials—all while keeping items out of landfills - Five-star stellar seller with integrity and a flawless reputation - Bundled discounts for multiple items? Check! - Pet-, allergen-, smoke, pest-, and mold-free location