How do I lock/unlock my Crescendo 2 Bendable Vibrator?

Once you've found a vibe that you like, you can lock your Crescendo so that you don't accidentally change the setting during play. To do this, hold down both the + and - buttons at the same time for 3 seconds. Your Crescendo will vibrate momentarily to indicate that it is now locked and then the buttons won't affect Crescendo. To unlock Crescendo, hold down the + and - buttons again for 3 seconds.