International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Improved grey filter with double life compared to the white filter* (life increased from 3 to 6 months). Original Philips accessories to avoid hygiene and performance problems. For hygienic humidification with up to 99% less bacteria emissions than ultrasonic devices. Filters bacteria and limescale from the water before they can be fed to the air.