Solar Led Crane Light, Red, 2.5nm (Nautical Mile Range), 12 Ultra High Intensity Led’s, Ip68 Waterproof, Omnidirectional 360 Degree Led Reflector, Steady On Led Is Standard But User Adjustable Led Is Available, Led Intesity Adjustable In 25% Increments, Led Life Expectancy Is >100,000 Hours. Both Body And Lens Are Made From Tough, Durable Uv Stabilized Lexan Polycarbonate. The Sl70-Tc Can Be Installed In Minutes And Is Completely Self Contained With No Operator Intervention Required. During Daylight Hours The Solar Module Will Charge The Battery, And The Lantern Will Automatically Begin Operation At Dusk, Once The Ambient Light Threshold Drops Sufficiently. The Sealed Battery Compartment Allows The Battery To Be Replaced In The Field By The User, Unlike Other Compact Marine / Industrial Lights With A Sealed Battery Compartment, This Unit Does Not Need To Be Thrown Away At The End Of Its Battery Service Life. Electrical Characteristics Operating Voltage: 3.6v Temperature Range: -40 To 80 Degree C Certifications Ce: En61000-6-3: 1997, En61000-6-1: 1997 Quality Assurance: Iso9001: 2000 Waterproof: Ip68 Warranty Full 3 Year Warranty