1) Weight without batteries:110g 2) 1W LED supper bright for long range lighting 3) Adjustable stable elastic head band, top strap is an option 4) Simple, around-the-head fit: Easily identifiable and put on in the dark 5) Operates with 3 AAA batteries 6).Inner packing: Blister white box, color box 7). Light on by on/off switch.