Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Broken out of the box, not worth the price

Generally agree with other reviewers here that the mouse is not worth the price. Mine was also unfortunately broken out of the box. Kudos to Amazon for their great and simple return policy. The main problem was that the mouse would cease to function and I would have to plug in and unplug again and again to get it to work again. After the second day the mouse stopped working altogether. The adjustable weight idea is an interesting concept, and the mouse is somewhat ergonomic (though to be honest I preferred the feel of my cheaper Microsoft Intellimouse Explorer 4.0). Overall this device is definitely not worth the price, there are considerably cheaper mice to be had that are just as nice or better, with higher reliability. It used to be the Logitech put out really high quality devices, but I fear their quality is slipping now.