Microsoft and Casio Sign Patent Licensing Agreement
Zen International Patents and Trademarks
On April 3, 2017, Microsoft announced that Microsoft Technology Licensing LLC and Casio Computer signed a new patent license agreement that includes broad coverage for smartwatch technologies.
Casio supplies smartwatch such as "Smart Outdoor Watch WSD-F10" with 5 ATM water resistant and "WSD-F20" with GPS.
These smartwatches include Microsoft's technology.
In the future, Casio may supply smartwatches to work with Windows Phone.

source: http://wsd.casio.com/jp/ja/wsd-f10/products/lineup/