The Mast P20 is a straightforward machine that is suitable for all levels within your PMU career. This machine gives you full control over your PMU procedures. With its 2.5mm stroke, the mast P20 is versatile and ready to take on all kind of skin type and is also designed to cause less trauma to your client¡¯s skin. For easy operation, our machine has an OLED display screen interface which makes it easy to change your speed and voltage. Designed to be maintenance free, allowing you to spend more time creating and less time maintaining your device. Input Voltage: 3.7V Output Voltage: 4-10 V Battery Capacity: 1000 mAh Charging Time: 2 hrs Weight: 122g Stroke: 2.5 MM Function: Instant start-up