Exactly the same as the other IQ Cyo’s I carry except for the color and the Senso feature. I find the senso setting–which turns the light on and off automatically depending upon the light conditions–useless since I keep my Cyo on at all times. But the chrome finish is pretty, the senso feature doesn’t make the light any worse, and the non-senso Cyo’s are not available with this finish.

Go here is you’d like a black Cyo.

All IQ Cyos comes with a sturdy mounting bracket and tailight wiring.

The Cyo comes in two version with different beam patterns.  The N Plus has a pattern like the IQ Fly and other B&M LED lights.  The beam begins about four meters ahead of the bicycle.

Some people don’t like this dark zone.  I personally never found it to be a problem because anything in that dark zone will have passed through the illuminated beam because it gets close too my bicycle (I am excepting suicidal nocturnal squirrels who might dart in front of me at the last minute, but I don’t plan my component choices around such rarities and figure if something can dart into a dark patch four meters in front of my bicycle I’m not going to be able to avoid it whether it is illuminated or not.)

The IQ Cyo R Plus has a less bright overall beam because the beam is larger, it eliminates the dark zone in front of the bicycle while giving up the intensity of the light in the area the N focus the beam.  Like this . . .

I have a hard time favoring one light over the other.  If your’e doing very fast descents the N might be preferred, but very few people will travel fast enough to outrun the R light.  If you’re doing city riding the R might be the ticket, but then again I don’t think the “drawback” of the N is much of a drawback at all.  The R version has a built in reflector, if that makes a differenct to you.  Both are very, very bright superb lights. Don’t lose any sleep choosing between the two.

Like all Busch & Muller headlights, these lights have optics which give the beam a horizontal cut off–like a car headlight on low beam. This means the light won’t blind other road users, and that the available light is focused on the road where you need it.  It also has a standlight, which means the light stays on even when you’re stopped.

To my mind, one of the great advantages of LED lights is that their long life means you effectively needn’t worry about the bulbs burning out, meaning you can use the headlight at all times. This gives you a little extra visibility in the day (and we’ll take all we can get) but also means the light is truly a set-it-up and forget it component. After I wire up a dynamo LED light on my bike I turn it on and forget it. I don’t need to flip a switch when I get on the bike. The only conceivable drawback is the extra drag during daytime riding when the light isn’t strictly necessary.  But 2 watts of drag doesn’t bother me in the least for the kind of riding I’m doing, and it doesn’t for most of my customers, either. This ease of use is one reason we’re such huge fans of dynamo powered LED systems.  They make your bicycle a better vehicle making it easier to use.