This Head Light features 19 green high-intensity LED bulbs (which will not disrupt plant growth cycles), 4 light settings, and a tilting light mount and adjustable head straps. Makes multi-tasking in the grey. This Head Light features 19 green high-intensity LED bulbs (which will not disrupt plant growth cycles), 4 light settings, and a tilting light mount and adjustable head straps. Makes multi-tasking in the greenhouse easier than ever! Requires 3 AAA batteries, not included.