Sorry typo there.   Reply Edit

The watch can also be worn on a clip and to accomplish this the manufacturers made if modular. You can rotate the watch face and it comes off so you can put it into the clip-type holder.

However the lock mechanism is not secure. You rotate it into the clip and it's held in by a bit of a tension lock. However the materials are a bit slick when wet and it often loosens on it's own. It flew off my wristband several times until finally it fell off during a run and got lost. Expen$ive.

If I had one again I would commit to the wristband and use industrial glue to keep it in place, although this would make changing a battery a pain down the road.

I really think the manufacturers should consider making a dedicated wristwatch. I don't think people switch between the two ways of using it alot and it may make the device less bulky. And it wouldn't fly off in mid run. This is the kind of device people wear during activities where their arms are flying around. The G forces add up, and it's expensive to replace.

The feedbcack, when I had it, was cool. However after a while you know what it's going to be: medium run, fast run, cycling, etc. You learn to guage your own level of effort. I suppose one really good use is to guage how much you can eat for dinner without being near a computer.   Reply Edit

On the positive: This product makes a huge difference in your ability to track how many calories you've burned so far. While the exerspy armband can only tell you retroactively (by uploading data via your PC) how many calories you've burned, this Display device makes it a real-time feedback and it makes exercising/walking throughout the day fun and motivating.

On the negative side, it is made with very cheap materials, the plastic display scratches EXTREMELY easily (my display had several scratches within week just from brushing up against a door or fitness equipment), and after about a month I lost the display device completely on a hiking trip when the display fell out of its socket (it doesn't lock into the socket very well).
So considering this device is made for exercise it's ironic how easily it is damaged and/or lost because it is not securely made.   Reply Edit

If you want immediate access to how many calories you are burning, get the display. It also has a cool trip feature that let's you see how many calories you burn in any given timeframe. Set to zero when you get on your favorite peice of cardio equipment and compare your actual caloric burn to what the cardio machine says you burned. Reality bites. :-)   Reply Edit