From Wikimon

McField (マクフィルド, Makufirudo) is a brand name associated with equipment carried by some Digimon.

The name "McField", especially in the case of "McField-brand mic" (マクフィルド社製のマイク), may be a reference to the character Mike McField (マイク・マクフィールド) from Legendz, a franchise created by Bandai and WiZ in 2003. Watanabe Kenji worked as the lead designer for Legendz.

Digimon that use McField-brand items[edit]