The Smoothie Blender comes with 2 jars for blending and 2 lids if you want to take it on the go.  This is a good feature in case you forget to add the liquid first, like I did.  The seal broke on the jar luckily there was another jar to use.  The motor is powerful enough to crush the frozen strawberries I used.  The power butter is manual which lets you control the consistency of the smoothie.