These OSRAM Cool Blue globes perform as described. Noticeable whiter light than standard globe with good distance (claim greater distance than standard halogen globe). At 4200K they are within legal Aust Design Rule requirements from my enquiries. While you can purchase 'whiter' globes with higher 'K' value they actually produce less distance light (unless they are higher wattage than standard globes and vehicle wiring) as the 'whiter' light is produced by a darker blue tint on the (still) halogen globe. Values above 4300K exceed ADR rules for after market globes. So while producing a 'whiter' light at closer distance, you loose distance by the heavier blue tint on the halogen globe. I am sure there are more technical explanations but in simple speak you get the idea. Happy to purchase again and would recommend.Read full review
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