I recently saw Magellen and Garmin devices with color screens that are absolutely easy to read and have higher resolution and longer battery life. For Garmin, except for the battery life on the Edge 800 is not ideal (it died before 200 kilometers), other models of GPS are worth recommending. If you do n’t need a map, you can buy a tiny GPS unit to save money.
Garmin Zumo 595M is latest. Have had 550, 590, now 595M. All around the best unit and you don't need to worry about rain. I just wish I had a 10" screen. Getting too old to read that far away. Have mine integrated to J&M CB, helmet intercom. CB because I needed to communicate to Harley riders. Seems old fashioned but its always charged up and always paired. Hate Bluetooth.