Salt water cell

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It is only general idea to create low power device with salt water cell as power supply. Here is example of salt water cell. It is made from:

- two glass containers,

- two copper electrodes,

- two silver electrodes.

Voltage generates by this two cell is around 1.5 volt. Here is example image:

I am thinking if it is possible to use this cell as power supply to electronic device like simple egg timer. Please comment below what you think about that.

Update:

It looks like that in current form salt water cell is able to generate voltage around 1.7 volt and current around 4-5 uA. As was mentioned in comments most important think is proper material and shape of electrodes. Here is video from quick test:

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