Brighten up your garden and path with Walk N Glow, the all weather, glowing stones measuring measure 7 inches by 4 inches. These luminous stones light up and glow in the dark as you walk past to help you lead your way. They have a unique built in motion sensor that is activated by movement up to 12ft away, and you can choose to set the light duration between six – 30 seconds. Four Type C batteries (not included) in each stone.