BESTSUN LED Cap Light Headlamp 3 Modes Ball Hat Lamp Flashlight Focus Adjustable Zoomable Headlamp 400 lumen Powered by AAA Batteries for Camping Hiking Working (Battery not included) This light attaches to a cap for the most practical, hands-free light source available. 3-Mode:High, Low,Strobe.Adjustable Beam Focus and lamp angle.fishing, hiking, map reading, night fishing, night flying, sailing, caving and hunting etc. Top click switch for on/off and output selection Can be used to wear on your head, or clip on your hat..Wonderful headlamp bike light suitable for outdoor sports, such as camping, traveling, hiking. Power supply( not included ): 3 x AAA 1.5V Alkaline batteries