Urban Tribes Inspiration

I'm going to design a hand held product, that is used solely whilst playing golf, that incorporates a score sheet, the directions for the course (which is achieved through the use of GPS), the statistics of each hole on the course, and the availability to call course staff when food and drinks are required.

I have been looking at a number of different pedometers, and remotes that are on the market to try and get an idea for the form and style that my product should take.