Super Bright CREE XML T6 LED Portable Zoom Tactical Flashlight Focus Adjustable 18650 Torch Outdoor Water Resistant Lamp with Battery and Charger 5 Switch Modes: high / medium / low / strobe / SOS (no memory). Powerful ultra-bright XM-L T6 Cree LED bulb provides a high light output compared to others. Adjustable lens allows you easily switch from narrow beam to widespread coverage, suitable for your personal use. Strong aluminum exterior provides both security and durability, best suitable for outdoor hiking, camping, climbing or other emergency situation. Power Source: 3.7V 3*AAA/ 1*18650/ 1*26650 (package contents include 2 26650 batteries)