1Stainless steel spot pen is non-toxic, hygienic, uneasy to rust for a secure use. 2Adopted high technology, microcomputer control, which is safe, fast and convenient. 3Using 6 gears adjustable scan spot power output for reliable and smart treatment. 4Unique electric ion technology, it has no bleeding in the process, no side effects after using, helps you achieve the medical beauty. 5Built-in rechargeable battery, it's more convenient to carry and use, plus you can use more than five hours one time.