I added some memory to my interface this winter and have just sent my final version for someone else to do some testing. I did my own testing during a Nationals X-country ski race early in March and it worked very well. The connector to the Seiko continues to be the challenge. It is definitely the most difficult part. I would make more of these interfaces if someone could provide the connectors.

Is there another connector more common that would replace the seiko one. A mini DIN would fit the case with modifications. Since Seiko has not chosen to develope this feature of the watch maybe keeping it is the wrong approach?