Automatic Sensor Function: Before you put them outside, please Twist the Solar Cap Off the glass base and Switch the Sliding Switch from OFF to ON. High Quality Solar Panel will convert sunlight to recharge the built-in battery during the day, and automatically activate, turn on the light when it is dark. The Diamond In-ground Lights will stay lit all night (up to 10 hours) when fully charged (6 hours in the sun). No electrical source is required, just make use of the free solar energy^Color Changing Diamond Lamps: With color changing led light bulbs and clear multilateral diamond lampshades, just like shining colorful diamonds dropping in your garden or patio, add more decoration, color, elegance and fun in your garden, patio, path and yard^Stainless Steel Material: Each solar lamp and pole is made of high quality stainless steel and each diamond lampshade is made of clear plastic. Waterproof design. The Diamond Decoration Garden Stake Lights will have a superior charming performance, perfect in your garden, front lawn, flowerbed, pathway, walkway, driveway^Easy to Assemble and Install: Each light has 3 pieces, the lamp, pole and stake. Place the pole on the diamond lamp shade and then insert the stake into the bottom of the pole. Very easy and fast to assemble. To use the lights, you need to Twist the Solar Cap Off the diamond base and Switch the Sliding Switch from OFF to ON^Package Includes: 4 x Solar Diamond Garden Lights Outdoor, 4 x Poles; 4 x Stakes; 30 Days Money Back Guarantee and 90 Days Warranty^