Salon-quality all-in-one facial device 2-WAY for scalp and face 4 treatment functions RF (Radio Frequency) ・Warms the skin, smoothing it with thermal beauty function EMS ・Works on muscles with low frequency EP (Electroporation) ・Penetrates high-molecular-weight active ingredients (collagen, hyaluronic acid, etc.) that could not be penetrated by iontophoresis alone, deep into the skin (stratum corneum) LED ・Light treatment for the skin Purchase date: Around February 2022 Warranty period has expired m(_ _)m Operation confirmed Please refrain from purchasing if you are concerned about it being a used item.