Apollo Horticulture 19 Watt LED High Intensity Green Light Headlamp 1 - Apollo Horticulture 19 Watt LED Green Light Headlamp Light Dimensions: 3" x 2.25" x 3" w/ Adjustable Strap / Three effective lighting options (strobe, full, or partial) 19 High Intensity and powerful green LED bulbs with amazing visibility, strength and over 100,000+ hours of burn time. Our Green LED light will not disrupt your gardens photoperiod cycle, making it perfect for professional or recreational use. Requires 3x AA 1.5 V batteries (NOT INCLUDED)