we provide best mig welders and While shopping if you are shopping anything you also want that the product you want must have some types so that you can choose the best type from those categories. so the auto darkening welding helmets also comes under two types one is visible shade welding helmets and other is fixed shade welding helmet. variable shade helmets just improve some comfort level as they are much expensive than fixed shade welding helmets and fixed shade welding helmets are cheaper than variable shade. there are also two choices more for the customers that they can choose among solar powered and battery powered helmets. if they purchase solar powered helmet then there is no need of of battery again and again and but if they purchase battery powered welding helmet they will have to replace the battery whenever battery will be dead and have any kind of problem