Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Avoid! Unless you want to waste time

One of the most worst input device! I can't believe how difficult it was to install and use it with connection losing every few weeks and oains of reinstalling. Want proof? Evev tach savvy and famous Wall Street Journal tech writer Walt Mossberg couldn't get it to work!Now I heards many good things about Logi's 2 new line though I love the design and can't affored their top of line bluetooth product.Microsoft outhgt to be ashamed of putting out piece of trash like this and stick to software.