The Grandstream Networks GSC3516 is a 15 W SIP/Multicast Talk-Back speaker, ideal for use with a computer. It offers Full Duplex hands-free communication with an HD acoustic camera and advanced echo sound cancellation. Equipped with 3 directional microphones with MMAD beamforming matrix and an omnidirectional auxiliary microphone, it ensures optimal sound capture. The speaker supports a full audio codec and wideband, including Opus and G.722, for superior sound quality. This modern white model features dual-band Wi-Fi connectivity 802.11 a/b/g/n/ac and Bluetooth, as well as a 10/100 Mbps network port with PoE/PoE+. It is designed for ceiling mounting and has touch control. The dimensions of the speaker are 15.0 cm in width, 15.0 cm in length, and 4.0 cm in height, weighing 0.29 kg. The package includes a Grandstream 15 W 2-Way SIP Intercom with built-in microphone. Compatible with smartphones and personal computers, this speaker is powered by electric cable and offers a stereo audio output mode. The tweeter has a diameter of 1.0 inch. The warranty is limited and the product is not waterproof. The modern style and special features such as the built-in microphone and Bluetooth connectivity make it an ideal choice for professional environments.