15w super bright solar lamps , 210lumens x watt ,total lumens 2100. Policristaline panel with 5v/25w of pure shine power. Battery capacity 3.2 v / 25ah Lithium ion. Installation suggested 4-5 meters height for perimeter coverage of 62ft . White 4500k color temperature led light. No wire needed, no need to connect to electricity, this product is autonomous. It generates sun power trough a policristaline equipment that deliver all watts direct to a bank of lithium batteries, this will provide full power all night as long as 3 nights with rain & cloudy days. Normal shine days no need to worry this will lightup your patio,yard,school,ranch for the rest of the night , this equipment is warranted for 3years direct with fabricant in USA. Life time 5-8years.