This vintage black handheld button calculator from Texas Instruments is a great addition to any collection. It is being sold for parts or repair, however, it still has plenty of retro charm. The calculator has a regular display size and is powered by batteries, making it a practical option for everyday use. It also comes with a calculator case and manual for added convenience. The calculator features LED lights and has a regular key size. This calculator would make a great addition to any office or collection.