With a new design and detachable cable, the Galaxy Audio HSM4 is a great choice for an economical headset. The HSM4's super lightweight design makes wearing the earset microphone more comfortable, even for long periods of time, without using excessive pressure to hold the microphone in place. The soft microphone stem allows for easy adjustment of the microphone's position as you wear the headset. These headset microphone works great with many wireless transmitters available. Our detachable cables can be wired to work with transmitters made by Galaxy Audio®, Shure®, Sennheiser®, AKG®, and Audio Technica®, as well as most other brands of wireless microphone systems. The Mixed model includes cables of different types (1 Audio-Technica, 1 Galaxy Audio/AKG, 1 Sennheiser, 1 Shure). You can also use the HSM4 wireless earset system with most PC sound cards (adaptor not included).