Philips CoreLine, Surfaced, Round, 1 bulb(s), 4000 K, IP65, Grey, White Philips CoreLine. Mounting type: Surfaced, Shape: Round. Number of bulbs: 1 bulb(s), Colour temperature (max): 4000 K, Luminous flux: 1600 lm, Bulb lifetime: 15000 h. International Protection (IP) code: IP65, Protection class: I, Suitable for indoor use, Product colour: Grey, White