Electrical muscle stimulation (EMS), also known as neuromuscular electrical stimulation (NMES), uses electrical pulses to trigger muscle contractions. These pulses mimic action potentials from the central nervous system, causing muscles to contract. Use the EMS ChestDefy Reduction Microcurrent Massager to replicate natural muscle contractions by sending pulses from electrode pads to targeted muscle groups, resulting in improvements in just a few weeks. This EMS ChestDefy Reduction Microcurrent Massager stimulates your body with low frequencies. Skin, tighten and strengthen your muscles, giving you a satisfying figure. EMS (Electrical Muscle Stimulation) uses electric current stimulation to directly send signals to muscles to promote muscle movement. All you have to do is fit the tummy sculptor to your body and let it work your muscles. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.