Features: * harmless to normal skin * 9 gears frequency and 4 energy gears optional * 5 minutes of no operation will automatically shut down * Press the switch and positioning button at the same time to work * LED screen display, clear and clear * Ergonomic design, comfortable and non-slip * Short pulse width, almost no photothermal effect * Powerful and fast laser directly decomposes melanin * Fewer treatments, better treatment effect * Can effectively decompose melanin into fine particles, thereby promoting skin metabolism and reducing melanin deposition Specification: Material: ABS Voltage: 5V Power: 5W Charging method: USB Use time: about 60 minutes Gears: 9 gears frequency and 4 gears energy Line length: 48cm±3cm