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RRP £39.00
Busch&Muller IQ Eyro 30 Lux
Busch & Muller Lights & Mirrors : Battery Lights
Busch&Muller     IQ Eyro 30 Lux - Click to enlarge.
Rear View - Click to enlarge. Showing Battery Compartment - Click to enlarge. Tunnel Shot - 30 Lux - Click to enlarge.

Specification

Available in:
  • 30 Lux
Description
    Launched in 2016 the Lumotec IQ Eyro is small, light, bright and convenient battery light. It utilises the B&M IQ light technology. The Eyro offers a very good and homogenous lighting of the road - with 30 Lux and light at close range directly in front of the bicycle. It has two operating modes. HighPower offers 30 Lux for more than five hours and LowPower offers 10 Lux for more than 15 hours. Supplied with an integrated lithium battery and integrated front reflector. Designed to be fork mounted. It can be charged via USB
Key Features
  • 30 lux high power mode for more than 5 hours or 10 lux low power mode for fifteen hours with consistent brightness
  • Indicator LED
  • Circumferential soft component protects from shock & moisture
  • Integrated, rechargeable lithium-ion battery
  • Charged via USB port
  • Approved for all bicycles
  • Supplied with USB cable
  • Fully charged within approximately 2.5 hours with the original charger
Mounts
    Fork mounting
How To Recognise A Good Head Light
    Illumination levels of headlights can be measured using different units - e.g. Lux or Lumen. B&M states the light output of headlights using the unit Lux. A Lux value provides the illumination level in relation to its distance from the light source. It is exactly this relation which is a deciding factor when considering a headlight, because it states the amount of light on the road. The value Lumen in turn states how much light exits the headlight at the light source, no matter if the light shines onto the road or is lost as stray light. That is why this value as excellent as it might sound can be very misleading

    However even the Lux value provides only partial information about the out put of a headlight. Also important is the quality of the light field which is created on the road. Its width and depth; its light quality that is both homogenous as well as comfortable to look at with the human eye and its Lux values does not say it all. And finally its glare free light/dark boundary are all qualities that cannot be stated using just measured data. What is important is how and what the rider can see for safer more comfortable riding

    It is notable that some manufacturers cite "visibility from x metres" as a means of evaluating headlamp quality, a rather meaningless value. There is no objective measuring method and the safety gain is only an individually perceived factor because it implies ideal conditions (i.e. no interfering light, "clean" air, unhindered visibility, universally identical abilities of human eyesight ...) that in reality do not exist. That is why B&M forgoes quoting a value that they consider useless and that only feigns objectivity. The most relevant question is this: Is there any real value in being seen from a distance of 1000 metres?
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