The Volt 300 is a USB rechargeable headlight that features quick-change cartridge battery and 300 lumen output in a compact design. This light features five modes: High, Normal, Low, Hyper Constant and Flashing. The Volt300 can be mounted on or under the handlebars or on the helmet (helmet mount sold separately). Spare cartridge batteries (sold separately) are ideal for long rides and commuting, with the included charging cradle recharging time is half that of USB charge time.
I bought this light because I wanted a cordless helmet light to supplement my handlebar light. As with other Cateye products I have bought in the past, so far I have had nothing but great results. Even though it is only 300 lumens, on its brightest setting it provides more than enough light for me to use it by itself on most gravel roads or paved roads during complete darkness.