![Casio's new Wear OS smartwatch is also its first to have a heart-rate monitor - NotebookCheck.net News Casio's new Wear OS smartwatch is also its first to have a heart-rate monitor - NotebookCheck.net News](https://www.notebookcheck.net/fileadmin/Notebooks/News/_nc3/WSD_F21HRRD_xlarge.png)
Casio's new Wear OS smartwatch is also its first to have a heart-rate monitor - NotebookCheck.net News
![Casio "Pro Trek" Outdoor Heart-Rate Monitor GPS Sports Watch (Model WSD- F21HR-BKAGU) (BLACK) - Walmart.com Casio "Pro Trek" Outdoor Heart-Rate Monitor GPS Sports Watch (Model WSD- F21HR-BKAGU) (BLACK) - Walmart.com](https://i5.walmartimages.com/seo/Casio-Pro-Trek-Outdoor-Heart-Rate-Monitor-GPS-Sports-Watch-Model-WSD-F21HR-BKAGU-BLACK_1812cb95-ee1b-4b9b-84fd-cca32b746b48.4913b3501c231ecc55da4b05f8dbc109.jpeg)
Casio "Pro Trek" Outdoor Heart-Rate Monitor GPS Sports Watch (Model WSD- F21HR-BKAGU) (BLACK) - Walmart.com
![Got this Casio Pro Trek WSD-F21HR. WearOS, mil-spec durability, heart rate + other sensors useful in outdoors activities and most importantly dual layer screen that can show just the time, reputedly for Got this Casio Pro Trek WSD-F21HR. WearOS, mil-spec durability, heart rate + other sensors useful in outdoors activities and most importantly dual layer screen that can show just the time, reputedly for](https://external-preview.redd.it/T1jIqAjcSJvW_hJRUfFPuLqk8BQ4ZadWhKLGAlGmghU.jpg?width=640&crop=smart&auto=webp&s=6af6ce98bbce5db45f964d276b4457df13894068)
Got this Casio Pro Trek WSD-F21HR. WearOS, mil-spec durability, heart rate + other sensors useful in outdoors activities and most importantly dual layer screen that can show just the time, reputedly for
191004_WSDF21HR_30sec | GO HARDER WITH A WEARABLE MAP Have you already tested the new PRO TREK Smart WSD-F21HR? WSD-F21HR has a newly developed optical heat rate monitor... | By CASIO PRO TREK
![Amazon.com: Buluoto Nylon Braided Magnet Charging Cable for Gshock GSW H1000 and Protrek Smartwatch Casio WSD-F21HR,WSD-F30,WSD-F20,WSD-F10 : Cell Phones & Accessories Amazon.com: Buluoto Nylon Braided Magnet Charging Cable for Gshock GSW H1000 and Protrek Smartwatch Casio WSD-F21HR,WSD-F30,WSD-F20,WSD-F10 : Cell Phones & Accessories](https://m.media-amazon.com/images/I/71T489kT5wL._AC_UF1000,1000_QL80_.jpg)