The Petzl Tikka Headlamp is hands free lighting for hiking, camping, and work around the house. The soft band is adjustable for multiple sized heads, all you have to do is put it on and hit the power button to see in the dark. There are 3 lighting modes, plus red lighting for night vision. Don't feel like replacing the three AAA batteries all the time? No problem, it's a HYBRID, which allows it to be compatible with the CORE rechargeable battery (sold separately).