Specification: Emitter type: XML T6 Casing material: Aluminum Alloy Casing Color: Silver & Black Lamp Diameter: approx 38mm 3 Modes: High / Low / Strobe Power Supply: 2x 18650 Battery (Battery NOT included.) Features: Adjustable focus range for different usage. (Hunting, cycling, climbing, camping and outdoor activities,daily home,etc.) Working voltage is wide and can utilize the batteries in the largest extent. Water-resistant,please be assured use in rainy day. The head strap can be adjusted.You can adjust the suitable size for you. Package Included: 1x T6 Headlamp Note:This headlamp flashlight can be charged directly. But the charged adapter is NOT included.