The product is a preowned Square Register POS system with dual displays, specifically a SPB1-01 model. It is a wireless credit card terminal that allows for easy and efficient processing of transactions in a retail environment. With Square as the trusted brand behind it, this POS system is reliable and has been tested to ensure optimal performance. Ideal for businesses looking to streamline their point of sale operations, this system offers a seamless integration of technology for efficient and convenient transactions.