KLAUS Z28800 Psychofeedback System, with blue headset. Final model of biofeedback. Touch panel system. A training system that allows you to grasp and freely produce alpha waves, understanding what state they are in. With explanation DVD. Effective for insomnia, autonomic nerves, obsessive thoughts, psychogenic palpitations, and other autonomic nerve and psychogenic issues. It is also beneficial when learning a skill development program. It has a significant effect on stress reduction. It is almost unused, but One end of the sensor belt is torn due to aging. The final model of alpha wave brainwave training, produced by Napoleon Hill's SSI. By using a multi-color monitor, you can measure your own state, understand the state of alpha waves, and become able to produce alpha waves on your own. Support belt, - Brand: KLAUS - Model: Z28800 - Accessories: Power adapter, cable - Type: Psychofeedback system, DVD. Adapter set. - Color: Blue Thank you for viewing.