The use of LED’s (light emitting diodes) instead of bulbs in manufacture has revolutionised the cycle lighting market. Units are now much smaller, more powerful, more efficient and more robust. Brightness can be varied at the touch of a button with an amazing amount of light available from such a small unit, although high power does reduce battery life quicker. These smaller units are lighter and with no wires to battery packs, are much easier to mount on handlebars and helmets.
Battery life is very good and the ability to recharge via USB port through your computer, or USB plug adapter, makes topping up battery life a doddle. Or there’s always the traditional rechargeable battery system available on some units if you want the option of carrying or buying extra batteries on your ride.