A development system that I bought and never used because of the age-old maker reason of too many projects, not enough time. Don't want to throw it away so I hope it might be useful for someone else. It's in brand new condition.

The watch comes with two USB dongles: a programmer and a RF interface so you can also communicate with your computer. I also bought a BM-CS5SR chest heart rate monitoring strap that can communicate with the watch via its built-in RF interface. Fresh CR2032 batteries installed in both the watch and heart rate monitor.