This is the Studio Pro Scent Diffuser that works with the Hotel Collection Pro-Pods. It's a really sleek and effective way to scent your home. Unlike other diffusers, this one uses cold-air diffusion, which creates a very fine, dry nano-mist of fragrance without needing any heat or water. This means the scent is purer and lasts longer.Key Features: Uses advanced cold-air diffusion for a pure, long-lasting scent. Creates a residue-free, dry nano-mist that is safe for furniture and fabrics. Effectively scents spaces up to 600 square feet. Preserves the quality of the fragrance oil by avoiding heat or water. Please note: Only compatible with Hotel Collection Pro-Pod™ refills.Details: Brand: Hotel Collection Studio Pro Scent Diffuser Colors: Black, Space Gray, Champagne Technology: Cold-Air Diffusion Coverage: Up to 600 sq. ft. Pro-Pod™ scent oil is sold separately.