Nashbar Axial USB Combo Light Set. The Nashbar Axial Combo Light Set is the perfect means to be seen out on the road in both daylight and at night. The incredibly compact and lightweight headlight and tail light each feature 4 modes and run times from 1.5 to 12 hours. Convenience and versatility, too, is what these lights are all about. The headlight can be mounted on the handlebar as well as a Bicycle Helmet while the tail light includes mounts for a seatpost and Bicycle Helmet plus an integrated clothing clip. Both lights are powered by rechargeable Lithium ion batteries and they'll be back to full strength in 2 3 hours via the included Micro USB cables.