Single switch located on top of light Non-slip elastic head strap Heavy duty rubber strap for hard hat applications This 3 AAA dual-function headlamp is cETLus, ATEX, INMETRO and IECEx listed Intrinsically Safe. This headlamp features a multi-position tilt head design and includes an elastic head strap with a non-slip lining and a heavy-duty rubber head strap for use on a hard hat. The top mounted switch provides user selectable high or low brightness spotlight operation. Power comes from 3 AAA batteries (included). Headlamp is 90 lumens for 13 hours on high and 50 lumens for 22 hours on low.