Description: 1) Rechargeable maintenance free sealed lead-acid battery (6V, 4Ah) 2) 28pcs LED (ultra bright, long duration, long lifespan) 3) Can be charged by AC / DC 220V transformer or solar power 4) Charging time: a) AC transformer: 14 hours, b) Solar panel: 10 - 12 hours 5) Brightness adjustable (to save more power), Weak brightness is half power consumption of strong brightness 6) Suitable for any type mobilephone charging 7) Lighting time: 6 hours with strong brightness, 10 hours with weak brightness. 8) Life of rechargeable battery: 1-2 years 9) Life of light source: 50,000 hours 10) Life of solar panel: 25 years 11) weight of light: 2.5kg (solar panel not included