Amazing new Cordless Air Massager – using advanced compression massage therapy & gentle rhythmic action may help massage away fatigue & tenderness whilst encouraging blood flow to the area & subsequently can help relieve pain. Use anywhere, fully portable, this versatile & affordable Massager is ideal to be used on swollen & aching knees, calves & ankles. Complete with a controller with 3 intensity settings & timer function means that you can easily tailor the massage to your personal requirements. Suitable for all sizes. Requires 2 x AA batteries.