Almost perfect...
...I also purchased the TimeTimer PLUS 60 min and must confess, that size matters (at least to me). The only downside is that the battery lid is very loose and opens even with the slightest eruption. This could be due to a faulty exertion, but since we live in switzerland and I payed ruffle the the amount of one more product on top, to get through customs, I can be bothered getting any support from the TimerTimer support team.
We did had a touch up, where I felt it was not pleasant dealt with. But the product does what it advertised for and we like it very much. 5 stars even if we are not happy with the provided support.