Principle:With the principle of ultrasonic wave and the mechanical vibration generated by high frequency current, this product can massage your deep-seated skin to bring heat effects and increase the metabolism of skin tissue and improve the circulation of blood. Also, it can help the body to decompost unwanted fat and tone up your body the way you like it. The creative desigh of GB-818 ultrasonic slimming massager is to ensure simplicity of operation. The effet is so obvious that you can get desired result. It`s very convenient for you to carry out. This is the best partner of your beauty and helth. By utilising DC 24V low power source, it can ensure safe while used. Accroding to personal different requirements, it has 2 operating modes and 8 levels of intensity for choice. Also, timer can be preset from 5-30 minutes Features: Mini portable Fit for any kind of skin Comfortable, no pain no wounds, no side effect Easy to learn easy to use Significant results, No Rebounding Phenomenon Specifications: Voltage: AC100-240v 50/60Hz Mainframe voltage: DC24v Max Power: 8w Operating frequency:1MHz Package include: 1 x Mainfram1 x Power supply line1 x User manualWe will send the corresponding power plug and voltage according to your country.