Dimensions and weight: Size: 198 x 198 x 60mm Weight: 2.8kg Physical properties: Modulus of rupture: 222kgf/cm2 Compressive strength: 28kgf/cm2 Breaking load: 2,555kgf Water-resistant standard: IP68 Operating temperature: -40 to +70 degrees Celsius Operating time: more than 12 hours Onset point: 150 to 350Lux Charging time: 3 (sunny), 8hrs (cloudy and rainy) Color: green Luminance 1: 8.8/7.8Nit Illuminance 2: 27.6/24.5Lux Uniformity: 89% Luminance (cd/m) measurement: luminance of 9 points on the lighting areas are measured and averaged Illuminance (lm/m) is obtained by multiplying 3.14 to luminance Uniformity is obtained by dividing minimum luminance by maximum luminance from 9 point measurements Basic components: Single crystalline solar cell Solar maximum output power: 2.34W Solar operating current: 7.85mA Solar voltage: 2.98V LED: LED size: 3.5 x 2.8mm chip type, (3.2V/20mA) LED current: 20mA per each LED operating current: 2.0mA per each LED voltage: R, Y, O (2.5V), B, W, G (4.0V) LED wattage: R, Y, O (0.02W), B, W, G (0.032W) LED quantities: 4 pieces Pseudo-capacitor: Pseudo-capacitor: 2.3V, 120F Number of pseudo-capacitor: R, G, B, Y, O (5EA), W (6EA)