Anti-skid reinforced glass Automatic solar power generation Long service-life (ultra-capacitor inside) 100% waterproof design with international certification Suitable for locations such as public squares, streets, bridges, sidewalks, docks, gardens, etc. Weight : 0.8Kgs (1.76 lbs ) Size : Top Diameter 136 mm (5.35 inches) Bottom Diameter 98 mm (3.86 inches) Height 59 mm (2.32 inches)