This is a Casio 10-digit calculator, the JW-10LR. #rairai calculator This calculator doesn't have any particularly notable features. Please assume the tilt function is stiff and doesn't tilt. I repaired the power supply, but consider it a junk item. It also looks quite old. Please check the photos for details. The grid in the background is 1cm. It's approximately 10cm x 16cm x 2cm.