Difference between RH stopclock original and the newer pro version

hey,

dos anyone know the difference between the two units? im looking at getting into f stop timing and i have seen both units available with a significant difference in price. just trying to figure out which one to go for.

PDFs of several of the user manuals including older versions are available on the RH Designs website. I suggest you read them and figure out the differences hat are important to you.