Lights, button, battery, and keeping it alive in salt water.

• What the light colours mean Every colour and pattern the sensor can show, and what it is telling you.
• Using the button One button, three actions: wake, shut down, and force restart.
• Battery life and charging How long a charge lasts and how to look after the battery.
• Care, cleaning and salt water What the sensor is built to survive and the one habit that matters.