UltraFire SK98 UV Flashlight - The Original 100 Lumen Ultra Bright, LED Mini 3 Mode Flashlight,Waterproof Flashlight torch Zoomability, Square beam when zoomed in. Length about 115mm(zoom out)-125mm(zoom in) High Power 3.7v 2200Mah 18650 Lithium Ion Rechargeable Battery 3 output Output Mode: high, low, Strobe (flashing) Material: Aluminum alloy casing, avoid high temperature, fall-off protection;Perfect for hunting, cy Precision Optical Zoom Head Shifts From a Focused Spot Beam to an Ultra Wide Field Flood Light