Features: RENEW YOUR AIR PURIFIER: When the filter change indicator shows on your LR300/LR310 air purifier, give it a new lease of life with a new Beurer filterLONG-LASTING: Offers approximately 4320 hours or filtration99.95% PERFORMANCE: The 3-layer filter system with HEPA filter H13 captures dust, animal hair, odours, pollen, harmful gasses, viruses and bacteriaKEEP IT SIMPLE: Easy to fit so you're never without clean air in your home