Sonic Warm and Cool Mask 9 in 1Say hello to fresh, radiant skin with the GESKE Sonic Warm & Cool Mask; a 9 in 1 device which utilises microcurrent pulses, LED light therapy, microcurrent stimulation, and warm and cool modes to stimulate the muscles beneath the skin, visibly tightening it. With SmartAppGuided technology, this innovative device helps skin to take in the active ingredients of your skincare at a deeper level, where they can improve your skin in the most efficient way.