"Headset Sennheiser GSP 107, 3,5mm jack (4 pin), adapter 2x3,5mm jack (3 pin), Cable 3m - https://en-us.sennheiser.com/global-downloads/file/9354/GSP_107_-_Fact_Sheet.pdf"
Headset Sennheiser GSP 107, 3,5mm jack (4 pin), adapter 2x3,5mm jack (3 pin), Cable 3m - https://en-us.sennheiser.com/global-downloads/file/9354/GSP_107_-_Fact_Sheet.pdf