Stay away. I work in municipal lighting. This specific bulb not only burns out frequently but also explodes, and the ballasts...sylvania, osram, philips, even if they cost three times as much.

This lamp is rubbish, it claims 6000lm but in reality it doesn't even give 5000lm, when operating with a classic magnetic ballast, the brightness barely reaches 4000lm, which is as much as a 50W and not a 70W! I don't know if this particular one is like that, but it is definitely not good and surely within the first 3 years it will be ready for the trash! With an electronic ballast I saw a slight increase in brightness where it slightly exceeded 5000lm, however it does not deliver the 6000lm stated on the box! Overall, it is a bad high-pressure sodium lamp, get something for double the money that will be better and from trusted and well-known manufacturers!