NiteRider's Lumina Flare is a perfect all-in-one light solution. With 650 lumens of white light up front and 2 watts of red in the rear, you get the brightness of a powerful headlight combined with the safety and visibility of a taillight. And at just 177 grams, you won't even notice it's there! It attaches easily on handlebars up to 31.8mm in diameter or on top of your helmet. There are five modes to choose from: high, medium, low, energy-saving walk, and flash. You can charge it off a computer's USB port and, should you throw it in a bag for later use, the Flare's lock out mode ensures it won't accidentally turn on and waste battery life.