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What is the button for? mine starts when I tighten the cap and the button does nothing. will it change vib on its own?
I just pulled a couple from stock, installed batteries, and the 9 functions are controlled by the button on the bottom. The unit should not fire up just by attaching the cap....it should, however, only work by pushing the button. It has 9 wonderful functions of vibration, pulsation, and escalation...as opposed to the original Butterfly Kiss, which is 3 speeds of vibration. If, after checking that the 2 AAA batteries are installed correctly (note the + and - inside the body) it still does not operate using the button, then we have a defective item/switch. Let us know the outcome, and we will help you resolve this under Warranty. Thanks