Auto/Manual Modes - Automatic mode is suitable for for large area treatment such as legs while Manual mode is suitable for sensitive and smaller areas such as bikini line and armpits. Press and hold the button for 3 seconds to initiate auto mode, you can then press the device to your skin and it will take care of the rest. Manual mode requires you to press the button.5 Gears - Each press of the button increases the gear as shown by the LED lights. It is recommended to use lower gears for sensitive areas such as the mouth.8 Weeks Hair Removal - In 1-3 weeks, the hair grows slowly, 4-7 weeks the becomes thinner and after 8 weeks of treatment the hair will be gone. Semi regular hair removal is required to maintain hair loss.Steps to Use - Shave the hair using a razer and dry the skin. Long press the device to turn on. choose the desired gear. Put on the protective glasses. Place the device vertically and firm on the skin and press the button.Warning, do not use in the case of - skin inflammation, eczema or other skin conditions. Photosensitive skin. Pregnancy, menstruation or lactation.