Features 1、Large view window provides clear and larger viewing perspective, and reduce fatigue of eyes. 2、With a solar panel to charge for battery of welding helmet which can prolong the service life of the welding helmet. 3、Adopting highly sensitive arc sensor, stable and reliable performance. 4、Fast response time provides better protection for welders 5、You will have a good protection with it at working and prevent occupational disease. Specification Features: Large view window provides clear and larger viewing perspective, and reduce fatigue of eyes. With a solar panel to charge for battery of welding helmet which can prolong the service life of the welding helmet. Adopting highly sensitive arc sensor, stable and reliable performance. Fast response time provides better protection for welders You will have a good protection with it at working and prevent occupational disease. Specification: Material: PA/PP Weight: Approx.108g/ 3.8oz Size: Approx.110 x 90mm/ 4.3 x 3.5in Thickness: 9mm/ 0.4in Shading degree: 1.5 x 10 Battery: Button battery (Not included) Package List: 1 x Welding Helmet Lens Note: Please allow slight error due to manual measurement. Thanks for your understanding. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List