Item Type: Flip Up Welding Helmet_x000D_Power Supply: Solar, lithium battery_x000D_Face Screen Material: PP_x000D_Frame Size: Approx. 110 x 90 x 9mm / 4.33 x 3.54 x 0.35in_x000D_Dark Light Adjustment Method: External control, stepless adjustment_x000D_Recovery Time: 0.1s~0.8s_x000D_Battery Replacement: Not Replaceable_x000D_Number of Arc Sensors: 2_x000D_Shading: DIN9-DIN13_x000D_Battery Specifications: Lithium battery 600mAh_x000D_Mask Structure: Head mounted structure_x000D_Service Life: 1-2 Years_x000D_Window Size: Approx. 92.5 x 42.5mm / 3.64 x 1.67in_x000D_Dimming Response Time: 1/10000s_x000D_Working Temperature: -10~65_x000D_Red or UV Protection Class: DIN16 1ZERO DISTORTION SCREEN: The curved screen has zero distortion, and only a 0.1cm high definition curved screen can scientifically reduce eye fatigue 2HIGH TEMPERATURE ISOLATION: High temperature resistance without baking face, the face screen can isolate the high temperature of 130 degrees Celsius, the temperature is within 130 degrees Celsius 3PROTECT FACE: Welding will not cause any damage to the face shield, which really prevents the welding slag from falling on the face and burning the face 4COMFORTABLE AND ADJUSTABLE: The durable headband can be perfectly adjusted to meet the needs of customers. Super adjustable and comfortable to wear 5HIGH TEMPERATURE RESISTANT MATERIAL: Made of fall resistant material, possess high temperature resistant, corrosion resistant, with high heat resistance and flame retardant properties, soft texture, impact resistance 1 x Helmet 1 x Headband