... usageRed light:1.Wavelength:630mm2.Characteristics: high purity, strong, with its energy density well-proportioned, named as “BIO Active Light ... effects:Restrain skin inflammationExterminate those acid bacteria that causes acne with no injury to skin tissue, decrease and further cure ... size: 76x116x66cmGross Weight: 24kgs Relevant picture: LED PDT Skin care beauty instrument with gene biology light