The 3T6 model is a top seller since it came out and for good reasons. This flashlight outputs massive light, specially for its size. With less than 25 centimeters it can burst out 3800 Lumens clearing your way. It is one of the classiest flashlights around and presents 5 light modes: High/Mid/Low/Strobe/SOS. Specifications: Model: Trustfire TR-3T6 Powered by 3 x 18650 or 2 x 18650 if extension tube removed (batteries not included) Switch Type: Clicky Current : 3A Operating voltage : 8.4V-12.6V Switch Location: Tailcap 5 Modes : Hi> Mid > Lo > Fast Strobe> SOS Mode Memory: Yes Lens:Glass Lens Reflector: Smooth Reflector.