Instruct: Classify Amazon reviews into positive or negative sentiment
Query: what a lifesaver

Instead of keeping a journal of daily entries for how many steps I walk each day, you just plug the device into the computer, hit download and it's there for you. you can print out daily, weekly, monthly and yearly reports. This can also keep track of your blood pressure and pulse. The only drawback is that there are no written instructions with the device. It all comes from the computer software that comes with the device.