1.unique water slot to avoid re-pollution: especially designed water slot can contain the excessive dirty water which is produced during sterilizing to avoid re-pollution. 2.through sterilization: 110 degree inner temperature vapor disinfects for 10 minutes continuously and kill bacteria that can cause tummy upsets in your newborn rapidly and completely. 3.considerate two handles design to be more convenient: specially designed two handles to be anti slip and more safe for mom. 4.sterilize 4-6 bottles 5.micro-computer controlled 6.convenient to use, easy to clean 7.safe and health eco-friendly material: stainless steal heater, PC, PP.