Feature: 1. Rapid response time reached 4/10000s, the LCD screen is equipped with 2 high-sensitivity photosensitive probe , which quickly darken in the event of an arc. It can sense the light source area more evenly without damaging ARC light and harming the welder's eyes, so that the welder can work more safely. 2. Streamlined designed, delicate appearance, effectively block smoke and dust, cleverly avoid the lens to be affected by exhalation when the temperature is low, and obstruct the operation. 3. The solar panel is used to charge the inserted button battery to extend its energy. 4. Advanced photoelectric technology, electric drive liquid crystal shading and discoloration level, the first layer of filter effectively cut off ultraviolet and infrared radiation. 5. With front, back and size four-way flexible adjustment, forehead high-density sweat-absorbent sponge, more comfortable to wear. 6. According to actual needs, the sensitivity and response time of the LCD screen can be adjusted with the sensitivity and arc delay knobs on the left and right sides of the item. 7. Newly improved superior PP material, with excellent flame retardant performance, anti-fall and explosion-proof, high and low temperature resistant, corrosion resistant. Specification: Condition: 100% Brand New Item Type: Welding Helmet Material: PP Color: As picture shown Optional:Style 1,Style 2,Style 3,Style 4,Style 5,Style 6 View Area: Approx. 92 x 42mm/3.6 x 1.7in Power Supply: Solar Energy / 1 x CR2032 Button Battery (Built-in) Power Switch: Automatic Charging Welding Arc Sensor: 2 UV / IR Protection Level: DIN16 Working Temperature: -15℃ -65℃ Face Guard Material: PP Bright State Color Level: DIN4-5 Dark State Color Level: DIN9-13 Dark State Adjustment Mode: External Stepless Adjustment Dimming Response Time: 1 / 25000S Recovery Time (internal Steplessly Adjustable): 0.15S-0.8S Package List: 1 x Welding Helmet 1 x Adjustable Headband 1 x Manual