1.Solar Panel: 0.35W/4.5V Poly Solar Panel 2.Battery: 3.2V/400mAH LiFePo4 3.Light source: 0.5W x 1 piece white LED 4.Hours of light with full battery: I: 10 lumens, 16 hours II: 20 lumens, 8 hours III: 40 lumens, 4 hours 5. Input : Sunlight or DC(Mocro USB) 6. Materials: ABS and PP 7. Overcharge and over discharge protection 8. IP65 protection and shock-proof warranty period :-2 years