This is a vintage Sharp EL-506P programmable scientific calculator with its original case. It is a handheld device that operates on batteries and was manufactured in Thailand. The calculator is from the brand Sharp and has a regular key size. Additionally, this vintage calculator is a model EL-506P and falls under the categories of vintage calculators, vintage electronics, and consumer electronics. It is a scientific calculator and is suitable for performing complex mathematical operations. Its vintage nature gives it a classic touch and makes it a great addition to any collection.