Thank you for viewing. This is a Dr. Devias facial device. ☆It is stated that the ultrasonic function, the far-infrared function's warming effect, and the negative ion function give elasticity to the skin, helping to maintain smooth and vibrant facial contours.☆ I've only used it once on my face. Please use it with your own gel. You can also use it on your stomach, legs, etc., with slimming gel. I tried plugging it in, and it powered on. Also, there's a note written on the top of the box (see photo 7). The gel on the left side of the photo is unused slimming gel, but it's also old, from the same period, so please comment if you want it. I cannot guarantee the quality. Instruction manual included (warranty period has expired) Would you like to try it? Please consider this after understanding the above.