5 LED Lighted Night Fishing Camping Hunting Hiking ON-Off Knitted Beanie Hat Cap 100% Acrylic Material: 100% Acrylic One size fits most. 5 LED lights with 2 CR2032 lithium batteries. The batteries can work for 12 hours continually, the light will be dimming after 12 hours, light will go out after 24 hours.. You can exchange the batteries after it goes out. ON-OFF Buttons