CookTek chafing dishes have RFID tags and temperature sensors already attached to communicate accurately to the charger below. Dishes available in 4.5 liter (4.7 quart) and 6.5 liter (6.8 quart) capacities. Stainless or glass lid. Stainless single insert as well as spoon holder (spoon not included) is included with each. Divided stainless and single / divided porcelain are available options. For non-CookTek dishes, Magneeto 1 and 2 devices are available. Magneeto 1 is a magnetic, side attaching device for use with any CookTek SmarTag charger. Magneeto 2 is a trivet like device for use with all CookTek SmarTag chargers EXCEPT the "MBC" drop-in combined buffet warmer / cooktops. (Magneeto 2 was designed principally for the Incogneeto, but is also useful when induction buffet dishes that only have a magnetic bottom (not sides) are in use.)