Rare, Unused National Panasonic Kemuran-Tei NF-RT650 Fish Roaster Accessories: Main unit, instruction manual Unused! National Fish Roaster NF-RT650, double-sided grilling possible Unused and in good, clean condition. Well-made. Odor reduction is possible with the smoke purification filter. (Kemuran-Tei) Almost identical to the successor model NF-RT700 on the internet. The only difference is that this one has a dial. Of course, the grill and stainless steel drip tray are unused and clean.