Amazon.com: EPOS I Sennheiser GSP 600 – Wired Closed Acoustic Gaming Headset, Noise-Cancelling Microphone, Adjustable Headband with Customizable Contact Pressure, Vol Control, for PC + Mac + Xbox + PS4, Pro : Video Games
User manual Sennheiser GSP 300 (English - 2 pages)
EPOS I SENNHEISER GSP 600 - Headset - full size - wired - 3.5 mm jack - noise isolating - black - Walmart.com
Amazon.com: EPOS I Sennheiser GSP 601 Gaming Headset, Noise-Cancelling Mic, Flip-to-Mute, Ergonomic Headband, Foam Ear Pads, Compatible with PC, Mac, PS4, PS5, Xbox Series X, Xbox One, & Nintendo Switch (White) :
Amazon.com: EPOS Sennheiser GSP 300 Gaming Headset with Noise-Cancelling Mic, Flip-to-Mute, Comfortable Memory Foam Ear Pads, Headphones for PC, Mac, Xbox One, PS4, Nintendo Switch, and Smartphone compatible. : Video Games