293-070 - DL1/3N Lithium Button Cell Battery
Duracell Lithium Button Cells, Used for: Watches, calculators, keyless entry remote controls, computers and other devices
Mfr Name: Duracell
Mfr Number: DL1/3NBPK
291-305 - 329 Button Cell Watch Battery SR731SW
Energizer silver oxide low drain button cell batteries for watches, calculators, small electronics, toys, lasers & medical devices. Sold individually.
Mfr Name: Energizer
Mfr Number: 329
I have used MCM for many years and would give high recommendation for getting the job done right.