Amazon.com: PPWOLF Rugged Smart Watch 1+4G Military Smartwatch IP68 30m Deep Waterproof Outdoor Men Sport Fitness Bracelet MP3 Music Play Health Monitoring Compatible Android Phone and iPhone iOS (Black) : Electronics
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Vintage Casio Watch Wmp-1 Mp3 Player Complete All Papers and Software for sale online | eBay
Casio WMP-1V Wrist Audio Player (MP3-32MB) - YouTube
Casio] The WMP-1 MP3 Player/Watch. A perfect example of a pre-smartwatch smartwatch. : r/Watches