I have been able to play four rounds with the z80 and very pleased. For some reason I do seem to be more shaky with it than my bushnell. If you hold button will change until it turns yellow and arch shows on the green. Really didn't have a problem locking on pretty quick. Thanks for tip to put in case lens up goes in and out much better. I played 36 holes and had 39% battery left. I charge it at night after playing which is kind of pain but not that bad. My home coarse has 27 holes so you have to pick the 9 holes you want. Picking the first 9 no problem. When you go to change to second 9 It doesn't give you option to pick another 9 just new course. If I picked new course my course wasn't a choice. The only way I could get there was shut off start over and pick the 9holes I wanted. That was only issue I had. It worked very well other than that. I would still like to see actual distance when using plays like distance. Over all very pleased.