Small, powerful and even water-resistant, Sigma Sport's Mono FL/RL light set lets you see and be seen. These mini-USB-rechargeable lithium-ion battery-powered front and rear beacons each boast a .5-watt LED that throws off more than 400 yards of visibility. They offer steady and flashing modes for 7 to 8 hours of run time per charge. They attache to your handlebars, stem, seatpost, seatstays or helmet quickly and easily with their tool-free O-ring mounts. They also sport a nice on/off switch that's easy to use even with gloves on. And you get handy battery indicators so you always know how much power you have left.