I run a DiNotte 400R tail light, 400L headlight. Each comes with an ample supply of clips, clamps, bands and attachment gadgetry and a choice of either a 2-cell (which I have) or a 4-cell Li-ion battery with connections that are positive. Each is powered by the same type battery pack; burning the taillight on a high intensity flash pattern during the day (for roads and highways), the battery should last 4-5 hours. If it's still daytime and the battery runs down, I swap the packs running what was the headlight pack now at the rear. When that runs down. it's time for a break, so find a watering hole that will allow a 2-hour charge not only on you, but the battery as well!

The DiNotte is shamefull! I'm always put at the rear of the pack, especially at night. That's when you can crank out a red beam that might even reach outer space! I can see a red octagonal stop sign light up behind me a half mile away. The tailtight by the way is mounted to my headrest, about the same height as the seat post mounting position on a DF bike. Several lenses are also included, I believe different beam widths, but I'm real happy with the out-of-the-box performance. Mounting at the tail has the twin eyes horizontal whereas the front is place vertically taking up very little space between crank arms. The DiNotte system will make a lot of people mad , not just because the Lumans are blinding, but because ............... they want it!

Most lighting suppliers know the value of their equipment and probably price accordingly. So for those of you who place a value on not only quality, but on support as well, the DiNotte service and tech support has been exceptional.