Purchased for testing purposes. Used a few times, but I'm not used to it, so I'm selling it. [Brand and Model] The CASIO JS-20WK is a reliable calculator, perfect for everyday calculations. [Eco-Battery Compatible] It uses an eco-friendly battery, allowing for sustainable use. [Convenient Features] The non-slip bottom provides stable operation, and a user manual is included, so even beginners can use it with confidence. - Brand: CASIO - Model: JS-20WK - Eco-Battery: Compatible - Display: 0 - Bottom: Non-slip - User Manual: Included Thank you for viewing.