Dr. Brown’s Insta-Prep Warm Water Dispenser simplifies baby feeding sessions with bottle prep in one easy step. With three water temperature settingsroom temp, body temp and slightly warmer than body temperatureyou can customize the perfect water temperature for babys bottles. Plus, the warming feature stays on 24/7, saving time with on-demand warm water to mix babys formula. The unique glass warming tank helps maintain ideal temperature without transferring a plastic smell or flavor, and the nightlight feature makes it easy to prep babys bottle in low light, perfect for nighttime feedings. Fill the bottle with warm water by pressing the water dispenser and release when done. To complete the mix, add formula powder. Always follow formula manufacturers instructions for preparation.