The portable Bright Star LED rechargeable system offers a number of headset viewing options. It features both an adjustable knob and cushioned Head Loupe for greater comfort and convenience. With direct LED light, dual pivot points, an on/off switch and powered by AA batteries (rechargeable), the headset is available alone or with 1.5x, 2.0x and 2.5x-range clip-on magnifiers. Offering another alternative is the Bright Star LED Clip-On, which attaches easily to eye and safety glasses. Light, comfortable and with a clip-on battery case, the Clip-On has a coated clip to prevent scratched lens.