I don't wear reading glasses but at 73 my eyes are definitely not what they used to be. I had the same concern prior to purchasing my Bolt. What I did was to show up at a bike shops group ride. Since you'll will find all sorts of bike computers that are actually being used and not boxed up, explain what you want to do and ask some of the guys if they don't mind if you look at their computer. I didn't have anyone that told me "No." I settled on the Bolt for several reasons but one is that I can zoom the screen in to see what I need most. While I have 9 data fields on my workout page, I mostly use 4 and that's what I have the screen zoomed in to. The display is crisp and clear and I don't have any issues seeing it, even without my bifocals.