Features:* * Made of material, and practical to use * This is a solar automatic blackening welding cap with solar charging function and fully automatic on/off, very convenient and efficient.* Automatically block and filter out bad light after soldering * You will be well protected at work and current occupational diseases * Compact and adequately protective * Solar automatic welding blackening cap* Easy to operate, safe* Lightweight design. Solar charging function, automatic on/off* Can block and automatically filter out bad light in welding stateSpecification:* Name: solar automatic blackening welding Cap* Material: ABS* Size(L*W*H): 20cm*5cm*10cm (Approx.)* View Area: 92*31mm (Approx.)* Shadow Control: Light Status: DIN3* Dark Status: DIN11* Dark Shadow Status Number: DIN9-DIN13 stepless adjustment* Switching Time: light to dark: 1/25000s (working at room temperature)* On/off: fully automatic * Operating temperature: -10 to +5 degrees centigrade* Power: solar battery, no need batteries * Quantity: 1Package Contents: 1 * Welding CoverNote: 1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.