Vitamix Ascent Series 48-ounce Self-Detect ContainerVitamix Ascent Series 48 ounce Self Detect Container Vitamix Ascent Series Blenders feature Self Detect technology, meaning the blender will recognize the container placed on the base and automatically adjusts the settings for that container's size. The Vitamix Ascent Series 48 ounce Self Detect Container is perfect for making smaller, medium sized batches to help prevent wasting food, and its petite design allows the blender to fit under overhead