These solar LED road studs are naturally charged by the sun. As soon as it starts to get dark, the LED lights on the bollard automatically turn on every night for up to 10 hours. They have been specially designed for road safety and can help prevent serious accidents and emit rather than reflect light. Features: The solar powered outdoor light works up to 12-24 hours after fully charged by sunlight. With light sensor control, the driveway light will automatically turn on when it starts getting dark every night. The waterproof aluminum lamp is ideal for lighting paths, decks, docks, boats, driveways, stairs, sidewalks, wirelessly. IP65 waterproof can ensure normal lighting under less than 1 meter of water and all kinds of rain and snow conditions. Their pressure resistance (up to 20 tons) and high impact resistance make them work well and safely in any outdoor conditions. Specifications: Color: 1 piece white light / 4 pieces white light / 1 piece warm white light / 4 pieces warm white light (optional) Solar panel: 2V / 90mA 0.18 Watt Battery: 1 size AAA 1.2V 500mAh LED: 4pcs 0.7W SMT (warm white / white) Sensor & Switch: Light sensor / Auto switch / Off Function: lighting and decoration Working time: 12-24 hours Charging time: 8-10 hours Brightness: 10-15 lumens Housing material: Aluminum + PC Bearable weight: 20 tons Feature: Durable car driving Working mode: normal light Working temperature: -20 + 70 Waterproof working grade: IP65 Lifespan: > 3 years Product size: 13 * 11.5 * 2cm Weight: 220g Note: Please note the charge it in the sun for 6-8 hours when you first use it.