Excerpt: Get the best of both worlds, convection oven cooking and a microwave built into one unit with the Sharp R-820Bk. Take a look below and you'll see that this is one of Sharp's top oven products as supported by the customer comments and ratings you'll see listed. You won't be disappointed with this Sharp convection oven and the culinary versatility it offers. Read on for more information. CERTAIN CONTENT THAT APPEARS ON THIS SITE, COMES FROM AMAZON SERVICES LLC.