LITOM headlamp with adjustable nylon strap, uses AA batteries. - Brand: LITOM - Color: Gray - Battery Type: AA Battery - Strap Material: Nylon - Design: Adjustable Strap - Light Switching: White light can be switched to "High (100 lumens)", "Middle (40 lumens)", "Low (6 lumens)", and pressing it four times activates "SOS mode (flashing SOS signal)". Batteries are included so you can use it right away. *Instruction manual is not included. Thank you for viewing.