Kendal Solar Powered Motion Sensor LED Light 001 Made of rust-resistant die-cast metal; Safe & water resistant. Sensitive motion sensor. 0.55 watts solar panel. 3.7V 900mAh Li-ion battery. 16 bright LEDs SMD 3528. 1W per LED. Lumens: 100 lm. LED life span: 50,000Hrs. Motion activates light: When people pass by, the light is on for 40 seconds. The light is off after people leave. Automatically identify day and night. over-charge, over discharge and short circuit protection. Li-ion battery span life: 500 cycles. Solar panel span life: over 5 years.