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Knog Blinder 4 Front Bike Light


    Knog Blinder 4 Front Bike Light

    This Knog Blinder 4 front bike light delivers bright, waterproof performance to alert others to your presence when you're out riding.

    • $44.95

    Item # 844821

    REI Members get back an estimated $ 4.50 on this item as part of their annual member refund.

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    • 4 super-bright, high-powered white LEDs offer excellent visibility; light output can reach as high as 80 lumens and can be seen as far away as 2,625 feet (800 meters)
    • Lens is designed to provide a balance between beam width and distance, optimizing visibility
    • 5 different lighting modes to suit your needs: steady, fast flash, organic flash slow, organic flash fast and eco-flash
    • Lasts up to 3 hours in steady mode, 4 - 5 hours in fast flash, organic flash slow or organic flash fast modes and up to 50 hours in eco-flash mode
    • Recharge the lithium-ion polymer battery via integrated USB plug; fold-out USB plug is waterproof and will not be damaged by exposure to the elements
    • Anodized aluminum face and rugged, flexible silicone body stand up to hard use
    • Tool-free attachment stretches and secures with metal clip around handlebars and frame tubes with diameters of 22 - 32 mm
    • The Knog Blinder 4 front bike light is IP66 Tested and 100% waterproof


    Item 844821

    REI Membership

    Knog Blinder 4 Front Bike Light Specs
    Best use
    Lithium-ion polymer
    3 hours
    50 hours
    39 grams
    Bulb type
    Number of bulbs
    Max light output (lumens)
    Headlight mounting
    Charge time
    Integrated battery
    Battery life on high
    Battery life flashing

    Knog Blinder 4 Front Bike Light

    Loading Ratings & Reviews...

    Rated 3.75/5 based on 4 reviews
    Rated 2out of5
    by fromNot the Best Will have to return it as the Serfas Thunderbolt is a superior light. The short battery life and the unnecessarily complicated charge and store instructions are a major shortcoming. I used the Thunderbolt today and it is vastly superior.
    Date published: 2013-10-13
    Rated 4out of5
    by fromGreat visibility light This is a great, extremely compact light. It throws out a lot of light, but in a very wide beam. This makes it ideal for keeping you visible to other vehicles. It's probably good enough to use as your only light, but I really like it as second light that makes me more visible, while a primary headlight with a more focused beam lets me see where I'm going. With it's low weight and flat shape, this would be the perfect helmet-mounted light, but its mounting is designed only for handlebars. I actually strapped a short piece of plastic plumbing tube to the front of my helmet so I can attach the light. Even with this extra hardware, the weight of the light on my helmet is negligible. The charge seems to last as long as advertised. USB charging is very convenient. The light has a small tab under the mount that flips out, so that you insert the light into a USB port like a memory stick. A small tiny led on the switch glows red while it's charging, turning green when it is fully-charged. It's nice that you don't have to use a separate cable, but the unit is a little bulky. I have to put a book under my laptop to raise it enough to allow light to plug into the USB port on the side. With the light plugged into the back of my desktop computer, I have to bend over to make sure the charging light is on. The battery is not replaceable. However, it will probably last a long time, and REI's return policy will come to the rescue if you feel the battery degrades too quickly. My only other complaint is that the flashing modes make me a bit queasy. This happens to me with almost every flashing headlight, except for the Dinotte, which puts a pause in between sets of quick flashes. I've focused on the shortcomings of this light, but I should stress that I think it's a fantastic light.
    Date published: 2012-12-12
    Rated 4out of5
    by fromSmall, effective and unobtrusive Other than the fact that it works reliably and is easy to recharge, the greatest virtue of this light is that it is inconspicuous. It is small and looks a lot more like a reflector than a light. That makes it much less likely to be stolen than lights that are more obviously, well, lights. The light that it throws is adequate rather than spectacular -- but it does the job. The built in USB charger works easily and well. The clasp is a bit eccentric (a good thing in foiling thieves) but easy and solid. The only real negative is that the switch is rather annoying: there are lots of flashing modes and getting the light to simply turn on all its LEDs is rather hit or miss.
    Date published: 2013-08-25
    Rated 5out of5
    by fromGreat Helmet Light! What a great product! I was looking for a long time for a Very Light Weight Helmet light that I can attach and detach easily and the Knog Circle White is perfect. See my photos for the Helmet attachment. It looks professional on my Specialized Prevail Helmet and attaches securely as if it was made for the Helmet. It's so light-weight that you barely feel it's there. I use it for night riding and it is very noticeable and provides that extra edge of safety. When you turn your head toward cars they notice it!
    Date published: 2012-12-15

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