1.Highly Effective Continuous Odor Control 2.High Quality Designer Fragrances 3.The Perfect Environmental Solution 1.TCell promotes a clean and fresh washroom in an environmentally friendly way. 2.Operating without the use of batteries. 3.60~90 days continuous fragrance,each covering an area up to 6,000 cubic feet. Refill: 4 Fragrances available: Mango Blossom, Polar Mist, Blue Splash, Citrus