This cap offers: 1) 4 white LED front light; illuminates up to 20 meters away; 2) red LED rear light: steady or flashing; It is perfect for signalling your presence on the construction site, on the street, by bicycle; the LED light is removable for washing and recharging. White light: 3 brightness steps: 100% (10 hours of AC light), 50% (15 hours of AC light), 25% (20 hours of AC light); 250mAh li-ion battery (one in each light). The 2 lights are equipped with a USB plug: you can easily recharge them in the PC, in the phone charger, in the USB port of the car. This LED cap is very light and perfect for outdoor activities, such as walking with dogs, running, hunting, camping, travel; stays warm and protects you during the cold season. The LED lights are easily removable to allow you to wash your cap in the washing car. 100% acrylic; unisex and unique cuts.