Reasonable cyclists can disagree about necessity of helmets. We say helmets--at the very least--are a great place to mount lights. The Vis 360° system shines 110-lumens wherever you point your head. A four-lumen tail light plus left- and right-side lights help you to be seen from any direction.
Want to make sure a motorist sees you? Simply looking in the direction of the motorist helps get their attention; no need to turn the handlebars. And, unlike bar-mounted lights, these lights are eye-level to motorists.
Charges with your micro-USB cell-phone charger (phones sold after 2010), or with a conventional USB. If you use a computer at work during the day, you can charge this up during the day for your ride home. (It's like getting your boss to buy your batteries. Shhh...)
The optional Light and Motion USB Charger allows you to recharge from an AC outlet.
Light and Motion Vis 360 + Bike Light Set
The same light as this one but more than twice as bright, and the ability to run only the headlight.
Light and Motion Vis 360 Front Strap / Vis 180 Long Strap
Light and Motion Vis 360 Spare Rear Mount
Light and Motion Vis 360 Spare Front Mount
Light and Motion Vis 360 Replacement Velcro (Rear)