A dual time zone timepiece with date window on a Runway Black dial. Complete with an E6B Flight Calculator to be your best backup to an instrument failure. With the ability to divide, multiply, convert currency or the standard to metric system, this is the original smart watch. EZ Squeeze pins on the back of the band allow you to easily remove or put on any 20mm strap. No need to use any tools or take it to a jeweler to swap out your band.