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Maybe with one of those M5PaperS3 thingies, you can make it save a lot more battery vs OLED - as long as you don't mind greyscale
interesting will look into it, was around Bitcoiners today and they all asked about the watch, so it is a conversation starter
Maybe with one of those M5PaperS3 thingies, you can make it save a lot more battery vs OLED - as long as you don't mind greyscale