The product is a lot of 4 Yealink MP56 Microsoft Teams IP phones. These desk phones are designed for VoIP business communication and have an Ethernet (RJ-45) interface. They are black in color and come with a Yealink brand, model MP56. Each phone has 1 phone line and is a handset unit. These IP phones are ideal for enterprise networking and server setups, offering a reliable and efficient communication solution for businesses. Made in China, these Yealink MP56 phones provide high-quality audio and video capabilities for Microsoft Teams integration.