The lightweight and versatile SchoolMate Deluxe Automatic Stereo/Mono Switching Headphones with Microphone from Hamilton make a great choice for training purposes. Separate 1/8-inch plugs for the headphones and boom microphone offer flexibility. The electret boom microphone picks up sound from any direction so your voice comes through loud and clear. At nearly 10 feet, the cord lets you move around comfortably while wearing the headphones. Wipe the soft leatherette-style ear cushions clean between uses.