The HT-S400 is a 2022 Sony subwoofer with surround sound, Bluetooth, and wireless technology. It is compatible with mobile and television devices and comes with a 12 inch subwoofer, 2.1 surround sound channels, black color, and included components like a soundbar, subwoofer, AC cord, remote control, batteries, and HDMI cable. It is waterproof, has a maximum range of 10 meters, and does not include an MP3 player.