Lamp survival factor (LSF) greater than and equal to 95 % after 16,000 hours (for P greater than and equal to 70W). All wattages are ErP-compliant. Better luminous flux maintenance than standard lamps. Greater reliability than standard lamps. Up to 20 % higher luminous efficacy than standard lamps. EAN: 4008321356048 - manufacturer-number: NAV-E70SUPER4Y - High pressure sodium lamp 70W E27 Energy efficiency class A+, Energy efficiency class spectrum A++ to E, Lamp power 70W, Luminous flux 6600lm, Lamp base E27, Lamp shape Ellipsoid, Colour rendering index CRI 20-39, Colour temperature 2000K, Luminous efficacy 93lm/W, External ignitor required, External ballast required, Total length 156mm, Diameter 71mm, Number of discharge tubes 1, Model Frosted, Weighted energy consumption in 1,000 hours 79kWh, Average nominal lifespan 28000h - NAV-E 70 SUPER 4Y