The 805 Plus TENS unit is a dual channel hand-held dual channel voice massager upgraded TENS unit based on the 805 TENS unit. It releases a weak pulse currents to stimulate the nerves on pain points, and thus, block the pain signals to the brain to relieve pain. Different massage modes relieve fatigue, while the arc shape design on both sides makes it easy to hold and carry. The upper side features a large portrait screen to display large text and compared to the landscape portrait mode of most massagers available on the market today, this screen is more consistent with user viewing habits. The 805 Plus TENS unit features touch type silica gel buttons with a smooth texture, and it is equipped with an adjustable volume and voice function, making this TENS massager ideal for disabled and elderly people.