Within a month the chest strap quick picking up my heart rate. I've changed the battery, still"‹ won't register.

I've never exposed this to any more moisture than sweat from a workout.

The band itself was a little uncomfortable. The plastic piece with the sensors isn't the most comfortable and the plastic extends more than it needs to. Although, if I could get it to still work, I would keep using it.

Works great. I got this to exercise while keeping my heart rate BELOW a certain threshold, so I'd like there to be a warning beep if it goes over that. If it exists, I haven't found it yet. Otherwise, it has a nice profile wizard. I really like this heart rate monitor a lot. Even though it has this channel select gizmo to connect to the watch, it's also compatible with my treadmill's monitor, so that was a bonus.

I ordered this heart rate monitor to use when I workout. The price was right so I gave it a shot. I received the monitor and the packaging was nice. It includes instructions along with a watch and the heart rate band. The instructions were clear and the watch was easy to setup and navigate.

The watch itself is nice. It fits well the display is large and clear enough to read while working out. The heart rate monitor is easy to adjust and fairly comfortable to wear during activity.

Now the reason for the 2 star review. The heart rate monitor never actually worked. It always read my heart rate in the 190s. It didn't matter if I was sitting down half asleep or running on the treadmill. I tried paring the device again and that didn't work. I tried doing a reset and that didn't work either. It didn't matter how I wore the chest strap I could not get it to work.

Everything else worked awesome. I was really disappointed the monitor didn't work because I would have used it for sure.

I has a Sportline Cardio monitor (women's model) and it finally gave out, after using it almost daily for several years. The men's was cheaper so I opted for the men's. The watch is larger, but the chest strap is adjustable, so I couldn't tell any difference from the women's model. I would have given it 5 stars, but I had a hard time programming it, seems like you have to put a lot of pressure when you press the buttons to program. I actually thought I was going to have to return it, but after trying for awhile, I was able to get it programmed. Hopefully I don't have that much trouble when the battery goes out.

UPDATE: Well this seemed to work well for the first 10 months, then it just stopped. Watch still works, so I tried changing the battery in the chest strap which is pretty easy, but though I 'coded' it to the watch after I changed it, it still will not pick up my heart rate. I decided to wear it to the gym when I did the EFX machine and it seemed to pick up my heart rate on that. But I want to use it when I go to classes, walk, etc. So I'm pretty disappointed right now.

The best heart rate monitor for the price. I had a heart rate monitor that I bought 5 years ago, the batteries gave out and we're not replaceable. I paid less money for the Cardio 660 then my first monitor and the batteries are replaceable. It seems to be as accurate as the monitor I was recently using during a hospital stay, plus it has a timer, alarm, and percentage mode.