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Knog Boomer USB Front LED Light

by Knog
4.2 out of 5 stars  See all reviews (20 customer reviews)

RRP: 34.50
Price: 23.45
You Save: 11.05 (32%)
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Colour: Black
In stock.
Dispatched from and sold by bikes4life limited.
  • Water Resistant Waterproof Flexible Body
  • Integrated Lens and Housing
  • Rechargeable Lithium-Ion polymer battery
  • Plugs into any USB port or charger
  • Recharge time 2-4 hours
  • Fits onto Handlebar
  • Low Battery Indicator
  • 3 Flash modes and Constant
  • Output 55 Lumens

There is a newer model of this item:
Knog Boomer USB Front USB Front Bicycle Light - Black, 6 cm Knog Boomer USB Front USB Front Bicycle Light - Black, 6 cm
30.34
In stock.

Frequently Bought Together

Knog Boomer USB Front Led Light - Black + Blackburn FLEA Rear 2.0 USB red rear bike light
Price For Both: 42.90

These items are dispatched from and sold by different sellers.

Buy the selected items together


Special Offers and Product Promotions

Colour: Black

Product details

  • Delivery Destinations: Visit the Delivery Destinations Help page to see where this item can be delivered.
    Find out more about our Delivery Rates and Returns Policy
  • ASIN: B004HNRBCG
  • Date first available at Amazon.co.uk: 21 Mar 2011
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (20 customer reviews)
  • Amazon Bestsellers Rank: 2,451 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
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Product Description

Manufacturer's Description

To preserve the condition of the Lithium battery, when the Boomer isn't used for an extended period, the batteries should rest at 50% charge. To achieve this, simply charge the Boomer to 100%, hold down the button for 5 seconds. This will turn the light on and automatically shut the Boomer off when the battery reaches 50% charge.

Product Description

KNOG wants to offer practical quality products that respect the environment: the brand has been working hard to improve all aspects of their products and processes to make them as environmentally friendly as possible. Specifications 62 x 33 x 30 mm 42g Industrial Silicone Body Rechargeable Lithium-Ion polymer 55 lumens Features Burn time: up to 3.5hrs (steady), up to 12hrs (flashing Super-bright HIGH powered LED MODES  1. Constant 2. Strobe flash 3. Fast flash 4. Random strobe Water-Proof flexible silicone body Superslim Integrated lens and housing integrated clipping feature quick-release mounting Visible up to 600 metres Low battery warning indicator. hold button down to 'off' in any mode Available in 6 colours Smart battery saving storage mode

Customer Questions & Answers

Customer Reviews

4.2 out of 5 stars
4.2 out of 5 stars
Most Helpful Customer Reviews
6 of 6 people found the following review helpful
5.0 out of 5 stars Worth the money 15 July 2011
Verified Purchase
This light (and its twin rear light) is fantastic - blindingly bright if you look directly at it and yet it fits in the palm of your hand. The diminutive size coupled with the simple wrap-around method of attaching the light to the bike mean it takes seconds to put the light on or take it off and it can be popped into a coat pocket. USB charging is a great idea.
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2 of 2 people found the following review helpful
1.0 out of 5 stars Beware! Fault developed after two years 4 Feb 2014
Colour Name:Black|Verified Purchase
I bough the front and the rear boomer usb lights in Nov 2011. Only two years and three months later BOTH units developed a fault that stopped them working reliably. Both units appeared to have moisture in them, despite them being sealed units. I expected these lights to last much longer, I will now avoid Knog as these have failed just outside their two year warrantee.
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2 of 2 people found the following review helpful
5.0 out of 5 stars Does what is says on the tin! 11 Mar 2013
Colour Name:Pink|Verified Purchase
Shocking pink version for my wife's bike (her colour choice!) to march the more subdued black version on mine. rechargeable is great feature, light bright enough for commuting (which is what I bought it for) hence 5stars
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1 of 1 people found the following review helpful
5.0 out of 5 stars excellent 13 Sep 2013
Colour Name:Translucent|Verified Purchase
its an excellent product. Very bright and reliable. Highly recommend. Fots on the handle bar easily and very light and compact to carry around
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1 of 1 people found the following review helpful
5.0 out of 5 stars Excellent - bright and robust 4 Jun 2013
Colour Name:Translucent|Verified Purchase
If you must have lights that are not permanently attached, this is about as good as it gets. East to attached, bright and rechargeable - and the translucent case diffuses the light even further. Brilliant.
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1 of 1 people found the following review helpful
5.0 out of 5 stars Excellent value for money 9 May 2013
By Aimi
Colour Name:Black|Verified Purchase
Very bright, easy to attach/detach, will save me a fortune in batteries. Arrived very promptly. Very happy with my purchase.
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1 of 1 people found the following review helpful
5.0 out of 5 stars Fantastic Light 14 Feb 2013
By A. Mole
Colour Name:Red|Verified Purchase
Amazingly bright, waterproof and really easy to fit to my frame.
Love the USB charge, I can even use my phone charger when I'm away from a PC.
Recommended!
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1 of 1 people found the following review helpful
4.0 out of 5 stars Amazingly small but powerful 15 Sep 2012
Colour Name:Red|Verified Purchase
For the size (and price), this is an amazing product. It looks great, takes little room in your bag, can be put on and taken off in seconds, and does a good job. Its great for avoiding getting caught out without lights and would be fine for use on roads where there is some additional lighting. However, on my route home, there are some very dark rural roads, and I find I have to cycle quite slowly as I can't quite see far enough ahead to avoid the many potholes on these roads. It doesn't help that I find I have to angle the light quite far down to avoid getting blinded by glare coming up from the front edge of the light: it would be nice if this had been masked by the silicone housing. But on the whole, I have no regrets buying this and would certainly recommend it to friends.

Update: the above was true until I had to recharge the battery. There is supposed to be an LED that comes on to tell you when the item needs recharging and when your are recharging it, when it has been fully charged. This light never came on and despite leaving it for at least four hours, had clearly not done any charging at all as the light then went off on the next use. It now does not work at all. Unfortunately, since I bought this in the summer and have not used it very much, it is now too late to return it.
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Most Recent Customer Reviews
5.0 out of 5 stars Great bike light
Really easy to put on and take off. I have had a few knog bike lights and i really like them. Bit fiddly to charge but great that you don't need batteries.
Published 1 month ago by Bridget
5.0 out of 5 stars Recommend
Easy to fit and make you very visible especially with the flashing setting on on lights. Do exactly what they say on the box. Would recommend.
Published 2 months ago by Miss PDJ
5.0 out of 5 stars great
Easy to charge
Easy to use... it is just the initial method of finding out how to take the light out of its rubber casing
Bright- it may look a bit 'fashionable rather... Read more
Published 3 months ago by Laura
5.0 out of 5 stars Perfect
Riding around Cambridge is easy and can see and be seen.

Recharging is a doodle as I charge whilst i'm asleep.
Published 4 months ago by LBlore
5.0 out of 5 stars Satisfied Customer
All my orders were just what I wanted. I do not feel the need to type out lo review notes.
Published 12 months ago by Frank
4.0 out of 5 stars Great innovation for cycling
Only thing I dont like is how difficult it is to get out of the case to charge, but apart from that it is much better than battery powered lights!
Published 15 months ago by Miss HM Day
1.0 out of 5 stars Kept falling off
I bought this with the front light which I would give five stars too. However the rear light attachment was very poor and after falling off several times I eventually lost it... Read more
Published 16 months ago by Alison O'Reilly
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