Lander on 4750 13-j electric


Any idea what battery this takes? Thx

389 battery will fit the old one is WD-4
These watches originally took the WD-4. Today you can use a standard silver oxide 389 battery; this has a smaller diameter and is thinner than the WD-4 so you should use a small non-conductive spacer for the modern 389 plus a small spring between the +ve terminal and the case back. Although a 386 appears to be a better fit, it is slightly too thick and causes the case back to flex inwards and touch the movement; this then shorts out the battery.
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