Really pleased with this unit - it doesn't matter if I don't write my readings down as I can just plug it in and upload the data and see the patterns. Simple to use and has a replaceable battery which is an improvement on the previous model I owned. Compact so I can take it in my handbag and clear screen.
Only other things that would be nice (not necessary) in a future device are:
- ability to measure fev1 like I did in my previous model
- cable with unit (had to use the one from my camera b..
Rating: [4 of 5 Stars!]