Solar Panel charges during the day Ni-Cad Batteries included, last up to 4 hours continuous use Brilliant LED’s last 50,000 hours 18" bendable neck with 1" mouth spring clamp See…your food easily at night with this handy portable grill light. Features 4 brilliant LED bulbs which last 50,000 hours, and a built-in solar panel to charge the 3 AA Ni-Cad batteries (included). While you’ll typically turn the light on and off during cooking as needed, it can shine up to 4 hours continuously after full sunlight charging.