1: Perfect for blending powered baby formula right inside your baby bottle ----no more lumps! 2: This convenient hand held mixer is easy to use and clean-up is a breeze. Can be used with disposable bottles. Two "AA" alkaline batteries required. 3: Before using: Wipe the handle and wand with a clean damp cloth. Slide the on/off switch to expose the battery compartment, insert two "AA" alkaline batteries as indicated and replace cover. 4: Mixing: Pour the pre-measured amount of water into baby bottle and add powdered formula. Press the on/off switch to start blending. Don't touch the wand while the unit is turning. Don't lift the FORMULA MIXER out of the liquid until the blending wand has stopped turning. 5: Clean Up: Remove blending wand by gently pulling the wand out of the handle. Riner the wand under hot water, wipe with a clean cloth and air dry. Don't immerse in water or place the unit in a dishwasher .