1. Frozen Blending: The Ninja QB900B is excellent for blending frozen fruits and ice, making it ideal for smoothies, frozen drinks, and desserts like sorbets and ice creams.

2. Chopping: It comes with a 16 oz chopping bowl equipped with a unique Ninja blade technology that allows you to chop ingredients such as onions, garlic, herbs, nuts, and vegetables quickly and efficiently.

3. Food Processing: You can use the Ninja QB900B for various food processing tasks like making dips, salsas, and sauces. It's also suitable for pureeing ingredients to make soups or baby food.

4. Blending: The 48 oz pitcher is perfect for blending larger quantities of ingredients, such as soups, sauces, and smoothies. It can handle both soft and hard ingredients effectively.

5. Versatility: The interchangeable motor head allows you to switch between the 48 oz pitcher and the 16 oz chopping bowl quickly, providing versatility in food preparation.

6. Dishwasher Safe: The parts (except the motor base) are dishwasher safe, which makes cleanup convenient and easy.

7. Compact Design: Its compact size and ergonomic design make it suitable for smaller kitchens or for those who prefer a space-saving appliance without sacrificing performance.

8. Control: The Ninja QB900B operates with a simple pulse mechanism, giving you control over the consistency of your blends and chops.

Overall, the Ninja QB900B Master Prep Food Processor Blender is perfect for everyday kitchen tasks such as blending, chopping, and food processing. It's particularly useful for individuals or small families looking for a compact and efficient blender that can handle a variety of kitchen tasks effectively.