The Yealink SIP-T57W Gigabit IP Phone is a brand new device with a 1-year warranty, featuring 16 phone lines and a variety of useful functions such as wireless connectivity, Bluetooth capabilities, speakerphone functionality, and power over Ethernet (PoE). With a sleek black color and an Ethernet interface, this IP phone from Yealink offers businesses a reliable and efficient communication solution for their VOIP needs. Perfect for enterprise networking and IP PBX systems, the Yealink SIP-T57W is a top choice for those looking for a high-quality, feature-rich IP phone.