Size: 17.2 * 10.71 * 2.62cm Material: METAL Color: Silver Specifications: 12-bit Calculator 1:12 Digit Widescreen Display, Meet The Daily Large Calculation Needs, Large Screens and Fonts To Clearly Observe The Calculation Results 2: High-Penetrating Acrylic Plate Protection Display Panel, Protect The Screen, Not easy to Draw 3: Battery + Solar Dual Power Drive, long-la casting, Long Working Hours 4: Use a plastic button, Clear Number, Comfortable, Not easy to Wear 5: Comfortable Tilt Angle, Make The Calculator's Screen of The Natural State of The Human Eye