Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unreliable. Frustrating to use

I bought this and put it to use on an 8 mile run 4 days after it arrived. It catches on to the satellite but have constant trouble hanging on to the signal as I run. As a result the readings on the T3 fades in and out. It is a very frustrating experience. I had thought of using this to compare against the foot pod, however T3 only allows the use of one (either the foot pod or GPS pod) at a time. Though the foot pod requires frequent calibration it is atleast consistent. I returned the product. I have read better reviews about Garmin. Garmin can cost 3 times as much. At this point, however I am willing to pay extra to get better reliability.