It is bigger than other address number light,environmental,high security, It has 4 LED whitelight and one 1.2V 1200Ma nickel-metal hydride battery in itGet 8 hours sunlight in daytime, it can be shining for 8-10 hours in night. Origin: Ningbo, China.It should be installed sunlight perendicular incidence place Welcome to contact us. stainless steel solar house number light,doorplate light