Knog Blinder Arc 640 USB Rechargeable Front Light
Black Dispatched in 1-2 days ID: 93080-325773
£96.99 Add to basket
Silver Dispatched within 4-7 days ID: 93080-325774
£96.99 Add to basket
Pewter Dispatched within 4-7 days ID: 93080-325775
£96.99 Add to basket
Ruby Dispatched in 1-2 days ID: 93080-325776
£96.99 Add to basket

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What are the delivery costs?

We offer Free UK Delivery on all orders.

Including: Channel Islands, Isle of Man, Isle of Wight, Northern Ireland, Scottish Highlands and Scottish Islands.

Standard delivery is normally 2 - 5 working days.

International delivery costs and delivery times vary for different countries. Please see here for more information.

Christmas delivery

For guaranteed Christmas delivery please order bikes before 11am, Tuesday 20th December and all other items before 11am, Wednesday 21st December. Guaranteed Christmas delivery applies to all items with the icon, please choose your option/size to see if the specific item you are after qualifies for Christmas delivery.

For serious road and trail riders, the Blinder ARC 640 is the top of the range Knog light. Beautiful looks, broad elliptical beam, and big power.

Chocked full of 640 lumens of light the Arc 640 lets riders see and be seen all from a USB rechargeable, 100% waterproof, integrated silicone package. Incorporating the latest Cree® LEDs with an elliptical beam of 16° vertical and 24° horizontal ensures riders light up the path ahead and not the heavens above.


  • Dimensions: 32x32x100.5mm (main light unit, excluding strap)
  • Weight: 150g
  • Materials: UV-resistant industrial grade silicone rubber body and straps. Polycarbonate housing PMMA Lens. Anodised aluminium heat sink. Anodised aluminium fascia and solid stainless steel MIM latch.
  • LEDs: 1 x CREE XP-L
  • Battery: Integrated rechargeable Lithium Ion battery
  • Peak brightness: 640 Lumens
  • 4 Light modes: 1. High Beam, 2. Medium Beam, 3. Low Beam, 4. Flashing Beam
  • Run-time (steady): High - 1.8 hrs, Medium - 3.5 hrs, Low - 7.9 hrs
  • Run-time (flash): Flashing - 17 hrs
  • Waterproof: 100% Waterproof and Dustproof to IP67
  • Beam angles (degrees): Elliptical - 16° (vertical) x 24° (horizontal).
  • Suitable for bar size ø22-32mm


  • Lens: A high precision, injection moulded TIR collimating lens gives a balanced ratio of beam width and distance to safely illuminate the path ahead.

  • Visible to 1500+ metres

  • Mode status: High / Medium / Low Beam status LED (Blue, Light-blue, Green)

  • Integrated lithium ion battery with on board battery protection circuit. Rechargeable via built in USB plug and extension cable (included). This saves using about 600 AAA Alkaline batteries during the light's lifetime.

  • Constant current drive technology maintains consistent brightness throughout specified run-time.

  • Integrated USB plug is waterproof and designed not be damaged by exposure.
  • Replaceable straps for tool-less attachment, 1 x Short (for ø22-28mm) 1 x Long (for ø29-35mm).

  • 7 hour charge time

  • Button: Longer button push on (0.75sec) prevents accidental activation of your light. Short presses switch modes continuously. Similarly, the light is switched off with a long button push off (0.5sec).

  • Low battery indicator

  • Battery storage mode activates when light is not used for a period of time to optimise battery longevity.

  • Thermal management automatically regulates the light output for optimum performance when the bike is stationary and in motion.

  • Accessories: USB Extension Cord, Helmet Mount Kit.

  • Tested against dropping, corrosion, UV, electrical shock and static, vibration and impact, temperature and humidity, as well as cycle testing and CE certification.