This is a CASIO DS-20K eco calculator with an eco-battery, a 12-digit calculator in gray. It's a well-made, Japanese-made calculator that is now difficult to find. Although it's a retro item, it's still usable. The condition is as shown in the images. Body only. - Brand: CASIO - Model Name: DS-20K eco - Power Source: Eco-battery - Color: Gray - Country of Manufacture: Japan Thank you for viewing.