This product arrives partially charged. Before use, charge completely. To charge product, place the magnetic charging tips against the vibrator’s metal charging contacts, then plug into a USB port. Light will illuminate and flash while product is charging. When product is fully charged, light will stop flashing and remain illuminated. To turn on clitoral tongue movement speeds, hold power button for 3 seconds. To cycle through clitoral tongue movement speeds, push the power button. To turn off clitoral tongue movement speeds only, hold power button for 3 seconds. To turn on shaft vibration, hold function button for 3 seconds. To cycle through shaft vibrating speeds and pulsing patterns, push function button. To turn off shaft vibration only, hold function button for 3 seconds. Wash before and after each use. For best results, use Cleansing Mist.