WeinCell Replacement Battery MRB400 / PX400 (1.35v, Zinc-Air)

WeinCell 1.35 volt mercury replacement button cell as used in many older 35mm slr cameras. Ideal replacement for batteries including the Z400PX, PX400, EPX400, RM400, RM400R and V400PX.

- Replaces RM440R and V400PX for Pentax cameras
- Voltage output more stable than alkaline replacements
- No camera adjustment needed
- Wein Cell batteries are not activated until the pull-tab is removed (Remove tab at least 30 minutes prior to use.)
- Environmentally Safe

Compatible with the following Pentax Cameras:

- Pentax Spotmatic I
- Pentax Spotmatic II
- Pentax Spotmatic IIA
- Pentax SP500
- Pentax SP1000.