Casio Watch Edifice ECB-20DC-1AEF. Introducing the Smartphone Link ECB-20 Series from EDIFICE, the high performance chronograph that incorporates direct feedback from racing teams to create innovative new timepieces under the concept of Speed and Intelligence. The four screws that hold the bezel in place, and the orange, blue, and other accent colors on the inset dial create powerful and bold designs. At the heart of these models is a Smartphone Link module that was developed in response to requests from racing team members. Smartphone linking not only ensures accurate timekeeping, it also supports a schedule timer feature that was developed to allow management of team schedules, and automatic time zone correction that comes in handy during global travels. Whenever you travel to a different time zone, these watches will automatically switch to the current time in your new zone. No button operation is required.