Well priced bike light. If you spend over £50 you'll save an extra 10% which brings the price to £17.99 !
£25 is the next cheapest elsewhere.
The new HL-EL510 has a 1-watt LED combined with OptiCube lens technology to shine at more than 800 candlepower. It features upto 60 hours of runtime, a compact design, high/low beams and Opticube technology.