Sodium Lamp: LP-AI-HPS400 Wattage (W): 400 Lamp Voltage (V): 108.4 Lamp Current (A): 4.34 Lumens Output (Lm): 51629.5 Light Effency (Lm/W): 130.7 Power Ratio cosˆ: 0.84 Color Temperature(K): 2025 Color Rendering (Ra): 22