Specifications:<br> Material: Glass+Plastic<br> Power Source: solar powered<br> Light Modes: automatic color change<br> Charging Time: 3-5 hours (getting enough sunlight)<br> Working Time: 6-8 hours after fully charged<br> Size: 5.1 x 25 inches<br><br> Warm Prompts:<br> 1. There is ON/OFF switch on the back of the solar panel. When you receive solar lights, please turn ON switch for the first time use.<br> 2. If the product does not work when the switch is on, it is because that the product is out of power. Please put the product under direct sunshine for charging.