Bike Lights

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Knog Boomer Rechargeable Bike Light (Rear)

now £15.00

was £30.00

Why to buy: Exceptional hard-wearing brightness - recharged from your computer USB socket.

Available Delivery Options
UK Next Day



The Knog Boomer is a gob-smackingly bright, hardwearing rechargeable bike light. That underplays it: it also looks fantastic, and is right at the forefront of Knog's reinvention of the humble bike light, which has caused such a stir in the cycling world in recent years. And it's all achieved without batteries - you simply plug the light into the USB slot of your computer for a full recharge.

When we first got our hands on the Boomer, we genuinely did a double take: what was lighting up that speed limit sign when we were still so far away we couldn't even see the '30' on the sign? Oh, it's our new Boomer!

The Knog Boomer pumps out astonishing brightness from a compact rubberised body - less than 50g in weight. It produces a smooth beam of light that makes the Boomer visible up to 600 metres away. With 4 different flash modes and extended battery life, you'll be seen on any ride. The built in rubber strap attaches the Knog Blinder 4V onto any suitable part of your bike in seconds. A truly brilliant light - that you'll never have to buy a battery for.

Size Guide

  • Dimensions: 68 x 41 x 30 mm
  • Weight: 46g
  • Hooks around any seat post with no fuss or tools

Tech Spec


  • 30 lumens brightness
  • Burn time: up to 3.5hrs (steady), up to 12hrs (flashing)
  • Super-bright high powered LED
  • Rechargeable Lithium-Ion polymer
  • 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
  • Smart battery saving storage mode

Who's Behind It?

Knog are an Australian firm from Melbourne who've made a huge splash in the bike accessories world. They did the small time pub gigs of the bike world for years before finally getting talent spotted - and the rest is rapidly becoming history.

Their funky locks and lights have made an almost unprecedented impression within their sector, and they're expanding into other areas at high speed.

In fact, there are few other players in the cycling world with such a conviction that existing 'rules' count for nothing - and that colour can be used anywhere. But it’s the quality of their designs and manufacturing standards that really marks them out – no danger of style over substance with these guys.

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