The KOSS CS100 On-Ear Communication Headset is a black headband-style headset with ear-pad cushions that rest on the ears. It features a 3.5mm jack for connectivity and has a built-in microphone for communication purposes. The headset comes with two earpieces for stereo sound and is designed for use with computers and laptops, making it a suitable accessory for online calls, video conferences, and other communication needs.