The welding mask material is of soft texture but is strong and durable. With cutting, welding, grinding function.Features :Full range UV/IR protection.Solar powered auto-darkening filter helmet.Darkness shade control.Charges with exposure to welding or sunlight.Full face coverage.Specification :Power supply: Lithium battery/solar poweredLight shade: DIN4Dark Shade: DIN9-13Way to shift dark state: Outer Control, Stepless shiftSwitching time: 1/25000sDelay time: 0.1~0.8sSensitivity adjustment: Stepless controlDelay adjustment: Stepless controlOperation temperature: -5 degrees ~ 55 degreesActive viewing area: 93mmx43mmPackage Includes :1x Solar Auto Darkening Welding Helmet1x User manualApply to automotive, construction, and food & beverage manufacturing, metal production and fabrication, military maintenance, repair and operation (MRO), mining, oil and gas, transportation, etc.