Battery: 3*AAA battery (included).
When you click for the first time the light will be in full height mode.5 inches (H) x 4. Small size and easy to carry-especially suitable for outdoor activities such as camping and hiking. Military Grade WaterProof Tactical LED Flashlight Body material: aluminum alloy-light source: XML T6 LED bulb Mode arrangement: high>medium>low>fast strobe>SOS Reflector: aluminum reflector-switch position: on the tail cover Switch type: push button switch.