Absolutely amazing, even though i only really use the Flo mode, its still a great, high quality product.
One thing i'd suggest as improvement would be a way to pull out the battery (a string attached to the bottom that we could pull up for example), i bought two 9v lithium batteries and i had a hard time removing them the first time. i eventually learned the proper way to get it out, but i accidentally scratched one of the batteries in the process.
ADMIN: We have looked at multiple options for the battery, but none were an improvement on the method that we describe in the manual and demonstrate in a YouTube video. We do always suggest reading the instructions first before using the unit and trying to change the battery.