UPDATE: I lost the watch/receiver of my third Polar F6 and have decided to go with the Timex Race Trainer, instead of the Polar. Bought my first Polar F6 in 2006. It was reliable and produced accurate, consistent readings - but quality has gone downhill since then.I've had my Polar F6 for two years. It's a great product, but the company's customer service could be improved. Recently, I sent the unit to the Polar Dallas, TX service center and requested a new LCD and a new elastic transmitter strap. They returned it with a new battery and new transmitter. Go figure.People do make mistakes, but my follow-up email was apparently read by the same person who gummed up the original request. A simple repair request has now turned into a time-wasting Tarbaby.