ADVANCED DESIGN: Added two fluorescent rings which shine in the dark night, quickly find in a emergency situations. 5 MODE: High, Medium and Low Beam, With ON / OFF button / Zoom in & out.easy to operate the taclight. LIGHTING DISTANCE: > 500 meters (over 1/3 of a mile),Super Bright Handheld Light. POWER: 1 x 18650 Battery (not included) Or 3 x aaa (NOT INCLUDED) . PERFECT FOR OURDORR: Use at any situation from camping and fishing trips to emergencies.