Leopard Solar Energy Automatic Darkening Electrical Welding Helmet Mask 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.Welding luminosity is soft and comfortable. It works the moment you start work,this products adopts advanced circuit design. Striking the arc,the observing window darkens immediately. Permanent UV/IR protection. Fashion appearance.ultra light designing ,wearing comfortable. High performance solar cells and lithium battery. Sensitivity and delay time can be adjustable. Grinding and weling mode can be chosen.