Features:<br />- High strong materials and fire retardant，can prevent resistance，anti-aging High definition protective filter，you can see the welding conditions clearly when weling the goods.<br /> - Welding luminosity is soft and comfortable.<br />- It works the moment you start work，this products adopts advanced circuit design.<br />- Striking the arc，the observing window darkens immediately.<br />- Permanent UV/IR protection Fashion appearance.ultra light designing ，wearing comfortable.<br />- High performance solar cells and lithium battery sensitivity and delay time can beadjustable.<br />- Grinding and weling mode can be chosen<br />Masks materials: PP Light<br />States: DIN 4<br />Dark states:DIN9-13 free adjustment(Outside Variable)<br />View Area: 9.2 x 4.2cm/3.62 x 1.65 inch<br />Response time(bright to dark): <1/30000 seconds(normal tempteratur conditions<br />Sensitivity (welding based on current size): Adjustable low/high<br />Battery: Lithium battery+solar cells，no battery change required.<br />UV protecion:16 levels<br />Working temperature: -5℃~55℃<br />Storage temperature:-20℃~70℃<br />Product Size: 180x 280x 220cm / 7.09x 11.02x 8.66inch<br />Head Circumference Diameter: Φ-15cm / 5.91inch ~ Φ18cm / 7.09inch<br />Weight: 516g / 18.20oz / 1.14lb<br />Package Size: 270x 240x 270mm / 10.63x 9.45x 10.63inch<br /><br />Package Include:<br />1 x Welding Helmet<br />1 x User Manual