Damn, 1 of mine has just gone, got the pair in Feb of this year from Ebay. Never had a bulb go that quick TBH
I'm going to send a note to Osram, assuming they have a CS email and see what they say.
EDIT: Found this on their website:
Question
There is a pictogram on the packaging: "Standard lamp = full clock" and "NIGHT BREAKER = half clock". What does it mean?
Answer
These symbols stand for the service life of the lamps. However, that does not mean that NIGHT BREAKER lamps have only half the service life of a standard lamp. Just like the service life of a battery depends on the electrical appliance to be operated, the service life of headlamps depends e.g. on the quality of the power supply in the different cars. Therefore, no absolute values can be specified for the life span of these products. The clock symbols however, point to a shortened service life compared to standard lamps.
The "standard" life span is a compromise the car manufacturer has to make for the basic equipment of a vehicle in order to meet different customer needs:
* Thus, there are customers who are mainly driving in the daytime, with their lights switched on. These drivers prefer a long lamp life to a high light output. Especially for this application, OSRAM offers the LIGHT@DAY lamp family with up to three times the service life of standard lamps.
* On the other hand, there are customers for whom the optimum road illumination at night is most important. The clear majority of drivers look for lamps that increase safety. Light intensity is mentioned as the most significant purchasing criterion by 41% of the people surveyed (GfK 2002 - German market survey). For these drivers who accept a shorter service life in favour of their safety, OSRAM offers the NIGHT BREAKER headlamps with up to 90% more light on the road (compared to standard lamps).