I use memory map on an iPhone with life proof case.
Not waterproof. Very accurate.
You can carry a solar battery charging back if you wish. Turn it on airplane mode and the battery lasts Yonks.
I use memory map on an iPhone with life proof case.
Not waterproof. Very accurate.
You can carry a solar battery charging back if you wish. Turn it on airplane mode and the battery lasts Yonks.
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