Powerful 2500 Sq.Ft Coverage for Large Spaces: Designed for large rooms and open layouts, the A1500 covers up to 2500 sq.ft with consistent, even fragrance. Using waterless cold air diffusion, it transforms essential oil into ultra-fine particles without heat or water, helping preserve the original scent while avoiding messy residue. Ideal for homes, offices, hotels, spas, and studios, it delivers a cleaner, more refined scenting experience for both everyday use and professional environments. Smart App Control with Custom Scent Schedules: Control the A1500 from your phone with the Bluetooth app for iOS and Android. Create up to 6 custom schedules, adjust working time from 10–300 seconds, and set pause time from 5–900 seconds to match different rooms, routines, or business hours. Whether you want a light background scent or stronger fragrance output, the A1500 gives you flexible, precise control without constant manual adjustment. Bluetooth control range reaches up to 60 ft, making it easy to manage scent settings in larger spaces. 500ML Large Capacity for Long-Lasting, Low-Maintenance Use: With a 500ml oil bottle, the A1500 is built for long-lasting scent performance with fewer refills. Under regular settings, it can provide fragrance for up to 90 days, making it a practical choice for homes, offices, hotels, spas, and other large spaces that need consistent scenting with less daily maintenance. Each unit also includes a 160ml bottle of premium essential oil, so you can start using it right out of the box without buying oil separately. Wall-Mount or Tabletop Design with Easy On-Unit Control: The A1500 supports both wall-mounted and tabletop placement, giving you flexible installation for different room layouts and scenting needs. In addition to app control, it features an intuitive manual control screen and a key-operated switch for secure, reliable operation in shared or commercial spaces. Whether used at home or in professional settings, it offers a more convenient setup and easier day-to-day management. Clean, Consistent Fragrance with Easy Monthly Maintenance: Designed to deliver a smooth, even scenting experience in large spaces, the A1500 combines waterless cold air diffusion with reliable day-to-day performance for both home and commercial use. It is safe for kids and pets when used as directed, making it a practical choice for shared living and working environments. For best performance, regular monthly cleaning with high-concentration alcohol helps maintain stable diffusion, cleaner output, and a better overall scent experience over time. Elevate Your Environment with QZD – Premium Scent Diffusion Discover a new level of sensory experience with QZD’s smart waterless cold air diffuser. Designed for discerning users who seek quiet luxury, effortless control, and consistent fragrance, the A1500 is the perfect companion for creating a five-star environment right in your home, office, hotel, or spa. Engineered with advanced cold air diffusion technology, the A1500 transforms essential oils into ultra-fine particles without using heat or water. This preserves the oils' natural integrity, ensuring a pure, clean, and residue-free aroma every time. With the built-in Bluetooth Scent Diffuser app (iOS and Android), enjoy full customization of mist schedules, fragrance intensity, and pause times — effortlessly managing your scent environment from anywhere. Whether placed on a tabletop or elegantly mounted on the wall, the A1500 waterless diffuser covers up to 2500 Sq.Ft, making it ideal for large rooms, luxury hotels, cozy cafes, yoga studios, or boutique retail spaces. It is crafted with both performance and safety in mind, offering pet-safe and child-safe essential oils imported from France. Each unit includes a generous 500ML oil capacity for up to 90 days of continuous use under default settings, plus a bonus 160ML bottle of premium LUNEVIA aromatherapy oil for an enhanced experience. Maintain your diffuser easily with monthly cleaning using high-concentration alcohol to ensure stable, efficient cold air diffusion. At QZD, we believe that scent is not just a luxury — it’s an essential part of daily wellness. Bring the calm, refinement, and warmth of premium scent diffusion into your life with QZD.