BENEFITS OF GUA SHA: Guasha can help relax muscles through the physical warming effect, relieve pressure, lift facial skin and relieve fatigue, is great for the whole body. Relaxes sore muscles while detoxifying the body. SLIDING FINE LINES: The Electric Gua Sha Board uses an upward massage technique to help facial skin resist gravity and smooth expression lines, combining modern skin care methods to further enhance your skin care benefits. FUNCTIONS: Edge microcurrent, balances the biological currents of humans, acts deep on the skin floor and makes the skin smooth and tender. Lifting and squeezing it can improve blood flow to the person and speed up the movement of cells to nourish the skin from the inside out. What's Included1 electric gua sha machine with essentials1 USB cable in the package fits most of chargers, 90 minutes for a full charge and offers up to 4 hours of usage on a single charge. 1 tradional gua sha board for experience an ancient method of hygiene care.