This green LED head lamp offers hands-free lighting without disturbing your plants' day/night cycle. The Active Eye Headlight features a wraparound nylon strap which fits snugly over your head without squeezing or pulling hairs. Placed prominently at the forehead level is a lightweight, bright green LED headlight. High intensity LEDs operate on multiple settings. Requires three AAA batteries (sold separately). Features: Perfect for checking your garden without interruption of the photoperiod Multiple lighting options (50% and 100%) Tilting light delivers illumination where you need it Compact and lightweight design Pure green light from bright LEDs