The Cubot ID206 looks an awful lot like an Apple Watch, albeit with Amazon Alexa integration. The ID206 has a heart rate sensor too, along with a 1.7-inch display and 5 ATM waterproofing. The sub-US$55 smartwatch is available in two colours, too.
https://www.notebookcheck.net/With-Amazon-Alexa-Cubot-releases-a-budget-smartwatch-with-voice-assistant-integration-and-5-ATM-waterproofing-for-under-US-55.553536.0.html