Classys’ High-Intensity Focused Ultrasound (H.I.F.U) technology uses micro- and macro-focused ultrasound to deliver energy with extreme precision at adjustable depths within the skin, the S.M.A.S. layer, and subcutaneous fat. Treatments such as deep contour tightening, non-invasive S.M.A.S. lifting, wrinkle reduction, neck and décolleté rejuvenation, facial and body skin firming, and fat reduction can now be performed safely and painlessly.