Hello, I have been trying to get information on the battery that fits the lightmeter on the K3. In some sites it appears as the RZ-55 or the PX640 but I have never found accurately which one is it. Can someone tell me which is it? Can I get a Wein zinc-air replacement without the need for an adapter? What's the correct voltage 1.35 or 1.5V? Thanks a lot!
Lightmeter battery on K3's
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