MFJ specified 386 (silver oxide) or G12 (alkaline) cross references to:
Duracell: D301, D386, MS41H, LR43
Energizer: 301, 386, S41E, 186
Maxell: SR43SW, SR43W, SR43 (G12), LR43
Panasonic: SR43SW, SR43W, SR43 (G12), LR43
Renata: 386, LR43
Sony: SR43SW, SR43W, SR43 (G12), LR43
Toshiba: SR43SW, SR43W, SR43 (G12), LR43
Varta: V301, V386, V41HS, V12GA
Data sheets:
http://data.energizer.com/PDFs/386-301.pdfhttp://www1.duracell.com/procell/pdf/watch%20_%20batteries_OS.pdfhttp://www.renata.com/pdf/watch/DBLR43.pdfThe silver oxide 386 or SR43 cells (~120 mA-hr) should outlive the alkaline (~75 mA-hr) G12, 186, V12 or LR43 cells.