Is it dark enough to protect your eyes?
Yes, in grinding mode, The darkening intensity remains at DIN4 level. And if you still consider it is not dark enough, you can turn to welding mode to adjust the darkening level.
Does it just protect your face but not protect your neck?
NO. Actually, you can refer to the size info of our item or the video shared by our customer. It not only covers your face but also cover the front part of your neck.