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$14.95 will get you this: It has a plug & play Grove connector, so you can easily add on GPS for a further $12. If you can live without GPS, or can solder, then I also recommend LilyGo. They have a slim wristband, like an activity tracker for about $20: and a wristwatch with a larger screen for about $25: All three of these are ESP32 based, so have ...

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