Duet is super impressive and smart device. First thing first, this is a 2 in 1 product which has multiple options and almost everything you need in 1 product. It is super awesome as cooker and Air Fryer both. It has 300 pre-defined programs (100 for cooker, Air Fryer and combo each) and easy to setup own programs to use it in future. It is very easy to use to cook rice, grains, vegetables and also provides health consious options in Air Fryer. Taste of food cooked in Duet is delicious. This product also comes up with owners manual (which provides simple instructions on how to use the product) and cooking guide (to cook almost everything possible). I found both of these booklets very helpful. Thumbs up for this product.