Pro Elite Sleep Monitor, Male Version

I bought this watch so that I could sleep within my sleep cycles, which on average is 90 minutes. 90 minutes contains all of the stages of sleep and at the end of a cycle you are sleeping at your lightest. If you can wake up at that time you will feel more rested. If you wake up at other points of the sleep cycle you will feel tired and sleepy all day long, even if you sleep for an extended period. What this means is that it is best to sleep in cycles that are multiples of 90 minutes - 1 1/2, 3, 4 1/2, 6, 7 1/2 hours. Using this watch I have been able to successfully sleep for less time and still feel rested. I always thought I needed 7 - 8 hours of sleep. Now I am rested with 6 hours nightly. I have even tried to sleep 4 1/2 hours with a power nap in the afternoon. That seems to work, but it is difficult to do.Setting the watch is easy. You set the alarm and the time when you are going to bed. A window of time can be set in which the watch will wake you if it detects movement before the alarm goes off. The default is 20 minutes. It keeps track of movement throughout the night to monitor the sleep cycle. The alarm can be set to vibrate, buzz or both. To keep track of your sleep you can download software from the manufacturer's website. The watch comes with a USB connector through which data is downloaded to your PC. The software allows you to input the quality of sleep and has a place for notes so that you can keep track of details.On a customer service note - The watch I bought through Amazon seemed to be defective. The alarm did not always sound. At first I thought I was just sleeping through the alarm, but several times I woke up just before the alarm. I deliberately did not move, and the alarm did not sound. I contacted Sleeptracker. They told me to send back the watch (just the watch) and they would ship out a new one, usually within 48 hours. They did just that and the replacement works perfectly. The manufacturer will only make such an exchange if the watch was purchased from an approved vendor, like Amazon.com. I highly recommend this product.Added December 17th 2010:About a month ago the Sleeptracker stopped working. The I assumed it was the battery and contacted the manufacturer because I thought I had read somewhere that the battery should last about a year. I sent an email asking about this and received a reply from the CEO and inventor himself, Lee Loree. He asked how I used the watch and to told him that I use the alarm and vibrator to wake up. He explained that because I use the vibrator mode the battery is used up more quickly. He offered to send me some new batteries, for free, which he did. I have to say, I really like the product and I really like the customer service.

This product is more like a novelty item than anything else. Set the timer, go to sleep, wake up, and check out your results on the computer in the morning. Sure, all the graphs and data look impressive at first, but once you really start to analyze the information presented to you, you'll soon see that it's all just a bunch of random nonsense.The first morning (Saturday) after I tried the SleepTracker, I felt that I had a pretty good night's sleep with no real problems. However, once I uploaded the data from the watch to my computer, it had a very different opinion on my quality of sleep. It claimed that I had 16 interrupted moments over the course of the night (one lasting almost a full hour), and gave me a sleep score of 62 (which is considered quite poor by their "standards"). I don't know about you, but I'm pretty sure that if I was interrupted and awake for a full hour I would remember it...but hey, the SleepTracker said it happened, so I guess it happened, eh?...I doubt it. Since it was only my first time trying it though, I thought I would give it another chance before jumping to conclusions.On Sunday morning, after using the SleepTracker for the second time, I again woke up feeling pretty good about my sleep. However, once again, the SleepTracker did not agree with my feelings in the slightest. Allegedly, I had 15 interrupted moments (again, one of which lasted close to a full hour), and was given a sleep score of only 64. At this point I'm pretty fed up with the results of this over-glorified watch; but alas, I felt that I must at least give it the good ol' 3-strikes before dismissing it entirely.On Monday morning, after my 3rd attempt with the SleepTracker, I woke up feeling very groggy, knowing that my sleep last night was not very good at all. At this point I was rather excited to see what results the watch would feed to me this time. Sure enough, the watch was completely wrong. The SleepTracker claimed that I had only 3 interrupted moments, had 89% deep sleep, and got a sleep score of 67. Farewell SleepTracker!So of the 3 nights using the SleepTracker, all 3 were completely off the mark. I am completely convinced that all of the "data" this watch provides is simply made-up. If you, like me, are trying to find an accurate means of tracking your sleep patterns, then you need to look elsewhere. I had high hopes for this watch, especially after reading all the positive feedback. I suppose it's possible that I received a bad watch...but I put more faith into the placebo effect on this matter.

Great product (when it works!). Major software problems have hampered use of the product. However, when the product works correctly, the silent alarm feature is very helpful (for waking you and not disturbing your spouse).

Update: Funny thing. I wrote the review below about a week ago. I had forgotten to write a review, and when the battery started dying, I looked through my emails to find the purchase date. There was an email from Amazon reminding me to leave a review.The battery lasted about a year and 3 months. Let me tell you, replacing the battery on this thing is completely impossible for us mere-mortals. 3 of the screws came out fine using a correctly-sized screwdriver. One screw is in there so tightly it won't come out. The screw is flaking from the many attempts to get it undone.Thus far an email to Sleeptracker hasn't been returned, and the chat help they have is completely useless. I suspect there's a monkey in there who's been trained to copy and paste answers into the chat window without being able to understand what I'm saying or asking.So at the moment I'm holding a very expensive piece of plastic that doesn't work, but did for a while, fabulously.---I've been quite impressed with how well this works. Often, it wakes me up as I'm mid-turn while flipping over in my sleep. Every now and then it totally fails and wakes me up mid-dream state.My one gripe, which isn't really their fault, is that I've learned to turn it off without getting out of bed. Still, even if I turn it off and go back to sleep, I think I don't go into a deep sleep and so when my regular radio alarm goes off it's easy to get out of bed. All over excellent investment.