The AlienBees™ are powerful, fast, accurate and versatile, with easy-to-use analog controls. The AlienBees™ self-contained studio flash units are available in three output models and five bold colors. Perfect For: Students, Hobbyists, Beginners and Beyond Replacing Modeling Lamps/Flashtubes: Refer to the video below when changing your modeling lamp and flashtube. As a reminder, f you are choosing to use an LED bulb for the modeling lamp on the AlienBees, be certain that it is DIMMABLE. Sync Cord Compatibility: All Paul C. Buff, Inc. flash units arrive with a 15' sync cord for connecting to a camera's PC sync terminal. Not all camera's are equipped with a PC sync terminal. If you plan on using this cable, and not wireless remotes, you may need a hot shoe adapter. Check your camera's compatibility. Find out how the AlienBees™ compares to our other flash models. FEATURES 6 f-stop power variability (5 Ws to 160 Ws) Continuous slider adjustment from full to 1/32 power Internal cooling fan for heavy duty use WYSIWYG modeling previews Standard 120 VAC, 50-60 Hz power requirements ARRIVES WITH 7 in. silver field reflector Protective shipping cover 150W modeling lamp Flashtube Down-Angle 15 ft. Power Cord Light Stand Mounting Block