Product Details:Weight: 2.27 pounds (1.03 kg)Dimensions: 11.89 x 10.59 x 10.28 inches (30.20 x 26.90 x 26.10 cm)Batteries: 1 CR2430 battery (included)Power Source: Battery PoweredComponents Included: Welding HelmetBattery Type: LithiumBatteries Included/Required: YesWhat’s Included:Welding HelmetReplacement BatteryUser Manual30-Day Money-Back GuaranteeKey Features: Panoramic 180° View & True Color Clarity:Experience a broad 180° view with the TRQWH welding helmet, featuring true color technology and a large viewing area (3.94" x 3.15") with side vision. The 1/1/1/2 optical clarity ensures every detail is crystal clear, providing a comfortable and expansive field of vision. Top-Tier Eye Protection:Equipped with a high-end auto-darkening lens with 4 arc sensors, the helmet transitions from light to dark in just 1/25000 sec when arc light is detected. The double-layer liquid crystal and optical coating filter block 99% of harmful light, meeting ANSI Z87.1, EN379 CE, and CSA Z94.3 standards for optimal eye protection. Adjustable Settings for Sensitivity & Delay:Customize your welding experience with external knobs for sensitivity and delay settings. Suitable for various environments and tasks, the helmet offers DIN 9-13 weld mode, DIN 5-9 cut mode, and DIN 4 grind mode. The external grind button allows for quick mode changes without removing the helmet. Precision Testing Function:Ensure accurate performance with the built-in TEST button, a reliable alternative to sunlight testing. Press the TEST button to verify the welding lens's functionality, ensuring it switches correctly between dark and transparent states. Versatile and Durable Design:Crafted from high-quality PP material, this welding helmet features dual power sources (solar and replaceable lithium batteries) for extended life and eco-friendliness. Ideal for a range of applications including plasma cutting, abrasive cutting/grinding, DC TIG, AC TIG, MIG/MAG, MMA/stick welding, and more.