Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Disappointed 2 ways
Review: 1. It worked well for a few months, but recently it started giving bad readings. When I start on a ride it gives good readings, but after 15 or 20 minutes they suddenly drop to implausible levels -- e.g., 54 when I'm climbing instead of a normal rate of ~135. Sometimes it wakes up and reads sensibly but sometimes it stays in its weird mode for the rest of the ride. It's no longer usable.2. Although the monitor battery is easy to replace, I had to pay a watchmaker $25 to put a new battery in the watch (don't even try to do it yourself).
