Using the Calexotics Optimum Power Realistic Male Masturbator is easy. First, make sure it's fully charged via the USB port. Press the power button to turn it on, and then use the controls to select your preferred vibration or suction function. There are seven options for each, so you can experiment until you find what you like best. When you're done, remove the sleeve and wash it with mild soap and warm water. Dry it thoroughly before putting it back in the case. Remember to keep the device away from water when it's not disassembled for cleaning. Store it in a cool, dry place. The travel lock is there to prevent accidental activation during transport, so make sure to engage it when you're on the go. Also, since the device has a memory chip, it will resume from the last function you used, so you don't have to keep adjusting every time you use it.