Instruct: Classify Amazon reviews into positive or negative sentiment
Query: aerolatte is very fine, but you will need to replace batteries

This is a truly great and fun item. It spins milk into froth within a few seconds. Truly delightful. You will need to replace the batteries it comes with within a couple of weeks. After that, it will continue to work as well as at the beginning. Delicious and fun. Go for it.