Happiness At Home(TM) 300 Lumen Adjustable Brightness Headlamp - Zoomable Ultra Bright Cree LED Adjustable Brightness Bontrol, 40-300 lumens or anywhere in between Zoomable: change from flood to spot using slider Cree LED technology gives brighter light and longer life Lightweight, low profile, and comfortable to wear Efficient LED technology means batteries last many times longer than incandescent lights