Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Can't run without it now...

This is by far the best "all-in-one" runner's gadget. The heart rate monitor works flawlessly, the GPS distances are reliable, and best of all, it's all in a lightweight, easy-to-wear package (much more comfortable to wear than it may appear from the online pictures). Without hesitation I would buy this again, and I look forward to the next revamp of it from Garmin whenever they figure out how to make it even smaller!