Baby Brezza Formula Pro Advanced is the most advanced way to automatically make a warm, formula bottle instantly. No measuring, no mixing and no fuss. You can customize the perfect bottle for your baby by choosing 1 ounce increments between 2-10 ounces, 1 of 3 temperature settings or dispensing water only. It works with virtually all brands of formula and all bottle brands and sizes. BPA-FREE. NOTE: The level will appear higher than the ounce size selected because of added powder volume and/or variance in bottle markings.For Example:4 Ounces of water plus powder volume is approximately 4.5-4.75 Ounces depending on your formula powder type. Features & details Most advanced way to automatically make a warm, formula bottle instantly. More accurate, consistent, hygienic & faster than hand scooping. Patented mixing technology automatically mixes formula & water to the perfect consistency. Works with virtually all formula brands & all bottle brands/sizes. For accurate dispensing, clean the mixing funnel after every 4th bottle or buy a spare funnel Fully customizable – choose 1 ounce increments between 2-10 ounces, 3 temperature settings and formula/water or water only dispensing Air-tight formula storage