Chubby Buttons is optimized to only consume power when you are using it. Otherwise, it goes into a smart sleep mode. So, we don't need an on/off button in order to enable the device to go into an "off state". The battery life is self-optimized by your Chubby Buttons and will keep running all season long. However, if you think you are going to put your Chubby Buttons away for a few weeks, you can put it into a deep sleep mode, easily.