Multibuttons: Function, signs, on and off, profit margin %, +/, key rollover, etc. Material: Plastic + electronic components Device Type: Basic Calculator with 12digit LCD Two strong power ways: supply by solar or 1 AA battery, extend service time Desktop Calculator with 12digit LCD: Eyeangled, display, easyToRead Perfect choice: For business and home use to make an accurate calculation Package includes: 1 x Desktop Calculator, 1 x Manual Power: Solar or 1 AA battery Portable size: With a deep and elegant for better decorating desktop TSV Desktop Calculator with 12digit LCD is a Portable Standard Function Business Desktop Calculator made of highquality ABS material + electronic components, with the characteristics of portable, environmentally friendly, multifunctional, easy to use, energysaving, and beautiful, which can help you to make accurate calculations The perfect choice for your business and home. Not can you use it yourself (Its deep and elegant can help you better decorate your desktop), but you can also give it as a gift to your and family. I they will bring you and you will not regret choosing it. The key rollover feature: Makes sure nothing is lost during input Calculator, TSV Function Desktop Calculator with 12 Digit Large LCD Display, Solar and Battery, Sensitive Button, Handheld Basic Calculator Weight: 5.15oz/146g Pruct Environmentallyfriendly: Automatically power off, more energy (on/off button) Currency exchange & memory functions: Makes calculations more smoothly Highquality materials: Large nonstick plastic button, new material, Screen: 10.5cm x 2.5cm/4.13" x 0.98" Size: 14.5cm x 12cm x 4cm/5.71" x 4.72" x 1.57" Specification: Made of ABS material, measure about 5.7 x 4.7 x1.5 Inch, weight 4 Oz. Doesn't take up much desk space, but it's big enough to be comfortable using it. Mulit-Function: Add, subtract, multiply, divide, backspace, grand total, CE, %, M+/M-/MRC, ON/AC button, and auto Powr-Off. The desktop calculator will turn itself off after about 6 minutes of being idle. Big Buttons: The electronic desk calculator adopts a scientific large and sensitive button design, which can make you work more quickly, efficiently and conveniently. Large Display: The LCD screen displayer clearly shows big numbers makes it easy to read from afar, it's layout and aesthetically pleasing. Max support 12 digits display. Dual Power: This desktop calculator utilizes both the powerboard and battery power(battery is not included). The powerboard will power up the calculator thoroughly in a lit environment.