POWERCAP Beanie hats combine Patent Pending LED Technology with a payment compression fleece beany style hat to provide you with the administrator hands unrestrained flashlight. The coddled, wet wicking lining will wet away from your head and keep you hot and thirsty. The 4LED 's 48 lumens of light with a easy on/off switch unseeable in the band. You 'll notice 2 of the LED 's are down at 55 degrees to light up where your hands are for warm up tasks, while the opposite 2 LED 's are aimed saucy to light the distance up to 42 feet away. 4 Cr 2032 Coin Cell batteries unseeable in the band up to 43 hours of life and are easily interchangeable.