<This review was originally posted for a Bodyclock Elite 300, NOT the Bodyclock Advanced. I'm not sure why it's been moved, but I'll leave it here in case someone wants to move it back>
I've had this item for a few months and, whilst I haven't suffered any of the malfunctions others complain of, I am disappointed by several aspects of the product:
1. The user interface is tedious. It's great to have settings for so many things, but they ought to be grouped. When I accidentally push the button once too often and "overshoot" the setting I want to adjust, I don't want to have to press said button another 19 times to get back to the setting I wanted.
2. The backlit LCD display is too bright. It may appear nicely dimmed when you first switch out the lights, but once your eyes have adjusted, you realise that it casts shadows in an otherwise dark room. I've switched the backlight off because I like my room properly dark, but this means that, if I wake up before the alarm, I've no idea if I'm only a few minutes ahead of it (so might as well get up), or hours (so should roll over and go back to sleep).
3. The buttons are cheap-feeling rubber ones. They work (although other reviews suggest that that's only a temporary state), but at this price the product simply shouldn't feel so cheap.
4. If you have the clock set to use individual daily alarms (yes, you can have a different alarm time every day), then when you want to adjust an alarm, you press the button and the clock automatically goes to the next day's alarm for setting. This is great if you're setting the alarm before midnight. After that, you're onto the next day already and the clock takes you to the setting for the day after that. If, like me, you're a little bleary-eyed, and maybe don't realise that it's a couple of minutes past midnight, you can easily find yourself oversleeping or rudely awakened. All that was needed was for the clock to go to the next alarm, not the next day.
5. Also on the subject of alarm setting, if you happen to be setting the alarm at the point where the clock should tick over from one minute to the next, it doesn't tick over. It just loses a mintue. Taking an extreme example, imagine that your shift times change and you want to adjust all seven of your daily alarms. This could take you a couple of minutes to do, during which your clock loses two or three minutes. Now, I know that two or three minutes isn't a great deal, but this is a CLOCK for pity's sake! It shouldn't lose track of time simply because someone pushed a few buttons.
I don't include this next comment as a problem, merely a personal obsevartion: this product simply doesn't work as advertised. I accept that the effects are probably different for every individual, but, let's face it, the only good reason for buying this thing is for its clever light. The rest is just fluff. I'll admit that, over the course of several months I have found myself pleasantly awakened just before the backup audio alarm sounded, but only a handful of times, and that sort of thing happened just as regularly with my old alarm clock. In the spirit of fairness, I'll say that I bought this product because colleagues told me how great they'd found them, so they clearly work for some, if not most, people. Further, Lumie offer a money back guarantee (30 days, I think) if you buy direct from them. That said, they're pretty strict about the time limit. I foolishly slipped a few days past it and found myself stuck with the thing.
Verdict: Lumie should be paying their customers for beta-testing this product. If you must have a "Bodyclock", buy one of Lumie's simpler products, or buy another brand.
Update: After 10 months of use, my Bodyclock Elite 300 has developed an intermittent fault. The light has started playing up, refusing to come one, or only switching on at full illumination. Lumie have offered a repair, but won't refund. Assuming that these things are still available, don't buy one.