Stainless steel spot pen is non-toxic, hygienic, uneasy to rust for a secure use. Adopted high technology, microcomputer control, which is safe, fast and convenient. Using 6 gears adjustable scan spot power output for reliable and smart treatment. Unique electric ion technology, it has no bleeding in the process, no side effects after using, helps you achieve the medical beauty. Built-in rechargeable battery, it's more convenient to carry and use, plus you can use more than five hours one time. LCD display shows how much power it is and the levels of gear, which is very clear to read either of them.