Solar Panel : Mono-crystalline silicon with high conversion efficiency Charging Methods : Solar and USB chargeable Charging Time : 5–6 hours of sunlight per day Working Time : Up to 2 nights on a full charge LED Type : SMD 2835 Wattage : 2W (18 LEDs) Waterproof Rating : IP65 Surface Color : Black Battery : 3.7V / 1200mAh Overall Dimensions : Φ114.2 mm × 706.0 mm Material : ABS (anti-UV, V0 fire-proof) – safe and strong Country of Origin : China Certifications : CE, RoHS Approved