You should always use lights when riding at night. This headlight from Denago will help you see and be seen. Can be used on the Denago eBike line as well as just about any other make/model of bicycle. 

This head light features an integrated, rechargeable battery that recharges easily with the included USB cable. The adjustable clamp allows it to fit on any common upright, cruiser, or flat MTB style handlebar, regardless of diameter.

• Bright white head light
• Recharges via USB
• Includes charging cable