The rechargeable Lithium Ion battery pack clipped to the headstrap will power the Princeton Tec Apex Rechargeable Headlamp for 90 hours. When you need to recharge, plug it into the included USB cable for more juice.
- USB charging cable
- 42 in (107 cm) extension cord
- Remote lithium ion rechargeable battery
- Head strap & crown strap
- Head strap bracket
- Velcro strap to mount to bike helmet