Auto Darkening Helmet in Prism

Sturdy construction- Helmet is made of lightweight, molded nylon with a ratcheting headgear and moisture absorbing lining on the headband. Customized Fit- Designed and equipped with a special up/down, forward/backward headband mechanism, reducing fatigue of the head and neck. Sensitivity factor- The sensitivity adjustment knob is located outside the helmet making it more convenient for the operator while at work. Variable shades- Adjust shade selection from 9 - 13 with the turn of a knob on the outside of the helmet. Shade Guide- Table is provided for easy and accurate number selection. Dark-to-Clear Delay- Upon striking an arc, the filter automatically changes from clear to dark in only 1/30,000 of a second. Operator sets the delay time for the filter screen to change from dark to clear state - short, medium or long. Replacement lenses- Changing scratched or damaged lenses is fast and easy! Clear outside lens and inside lens are available from K-T Industries. Dual purpose- Set selection on inside of helmet for WELDING or GRINDING. UV/IR Protection Auto-darkening filters provide full protection for the user eyes and face, even in the light state. The UV/IR protection level is up to Shade 16 (DIN) at all times. Conforms with ANSI and CE safety standards. Larger Lens Size- Increased field of vision makes it easier to see the working parameter. Each has four optical sensors. Battery and solar power- The helmet is powered by high performance solar cells, and has two built-in, 3V lithium batteries as power back-up. ADF lens turns off automatically after 5 minutes of inactivity to conserve power.