Why does it list built-in grinder in the specifications?

That's very odd... I see it too along the left page frame. It has got to be a mistake. There is no grinder!

Explain the use of the three buttons on the machine?

I assume you are referring to the 3 buttons with the different cup sizes on them? If so, these 3 buttons allow you to brew 3 different amounts of coffee/cup sizes. Hope that helps??

Questions & Answers: Keurig K45RED Keurig® K45 Elite Brewing System Rhubarb

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Keurig K45RED Keurig® K45 Elite Brewing System Rhubarb

Color rhubarb
Choice of 3 cup sizes
Removable 48 oz.water reservoir
Quiet Brew Technology
Energy Savings Mode
Includes water filter handle & 1 charcoal filter
30 Day Money Back Guarantee

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