I purchased this item new and used it for about a month before storing it in a dark place. I tested it by entering simple calculations like multiplication, and I found no problems. There are some minor scratches on the display and body. Please check the photos and understand that this is a personal assessment. The item has been disinfected. (The shipping method may change from Rakuraku Mercari to Yu-Yu Mercari, but it will still be anonymous shipping.) Power: Lithium battery, solar battery Battery used: CR2032 x 1 (DC3.0V) Sharp Corporation Eco Mark Certified Retro Accountant Tax Accountant Bookkeeping --- The following is an automatically generated description: [Brand and Model] The SHARP CS-S952 is a reliable calculator. It features a simple and user-friendly design. [Functionality] Equipped with a tax calculation function, it streamlines calculation tasks for business and home use. It supports a variety of calculations. [Design] The silver exterior is stylish and matches any environment. The button layout is intuitive and easy to operate. - Brand: SHARP - Model: CS-S952 - Type: Calculator - Color: Silver/Black - Function: With tax calculation function