Does the watch check blood pressure??

Hi

No, it doesn't - but it does measure heart rate.

• Measure your heart rate with your Apple Watch - Apple Support
• https://www.apple.com/uk/watch/health-and-fitness/

However, you can buy an iPhone-compatible blood pressure monitor:

http://www.apple.com/shop/product/HF047/withings-wireless-blood-pressure-monitor - US Apple Store

http://www.apple.com/uk/shop/product/HF047ZM/A/withings-wireless-blood-pressure- monitor - UK Apple Store

PS. The Withings Blood Pressure Monitor works in conjunction with the Withings Health Mate app for iPhone (free via iTunes / iPhone App Store).

The app includes Apple Watch support, so you can view data on your watch:

https://itunes.apple.com/gb/app/health-mate-steps-tracker/id542701020?mt=8