Aluminum Alloy 2000LM Zoomable CREE XML-T6 LED Flashlight With 5 Modes-High, Middle, Low, Strobe and SOSWith Battery and One 18650 Rechargeable Li-ion Battery Material: Aluminum alloy Battery: 18650 (battery no included) Item size: 11.6 * 2.8 * 3.0cm/ 4.57 * 1.10 * 1.18in (length * body diameter * head diameter) Color: Black