Princeton Tec Remix Rechargeable Headlamp throws a full 185 lumens, so you wont overrun its range while running, riding, or skiing. The rear flashing light will keep you visible from behind. You can switch over to the LED cluster for wide-area light. A large push buttons are easy to operate, even with gloves on. Universal micro-USB charging system has a charge level indicator. Comes with rechargeable lithium-ion battery pack, and also works with 3 AAA alkaline batteries. Light head rotates back to protect the power button during storage and transport to prevent it from accidentally turning on. .