Each of Exposure's Trace Lights in this front and rear Pack weigh slightly more than 400 grams, which makes them ideal for not only commuters, but long-distance riders, too. So, if you're unsure if a ride's going to push into the dark, just toss them in a jersey pocket.
This is possible because Exposure combines a powerful, yet efficient Cree XPG LED with a lightweight 700 mAh lithium ion battery in a CNC'd aluminum body. And when compared to a plastic body, it's much more durable, and it efficiently transfers heat from the LED. As a result, it ensures both an extremely long bulb and battery life.
In either the Flash or Low setting, a Trace will last around 24 hours. And in High or Steady, the front light will give you 110 lumens of light for about three hours. Like the front, the Trace rear light features an Optimum Mode Selector with three brightness modes and the choice of solid or pulsing beams. However, the output is reduced slightly to 75 lumens. Both lights, however, use an USB interface for charging. Both lights also have a simple fuel gauge that uses a traffic light system to make it obvious when it's time to recharge.
The Exposure Trace Light Pack fits standard handlebars and seatposts with an elastic band for easy installation and removal.