Item Type: Auto Darkening Welding Lens Lens Frame Size: Approx. 110 x 90 x 9mm / 4.33 x 3.54 x 0.35in View Window Size: 92.5 x 42.5mm / 3.64 x 1.67in Bright Color Coding Level: DIN4.5 Dark Color Coding Level: DIN9~12.5 Dark Color Coding Adjustment: Internal control, stepless adjustable. Dimming Response Time: 1/10000S Sensing Sensitivity Control Adjustment: Stepless Adjustable Recovery Time: 0.1S or 0.8S. Power Supply: Supports lithium battery power supply or solar power supply. Lithium Battery: 1 x lithium battery, 600mAh. Shipped with built in battery. Battery Replacement: No Working Temperature: -10 ~ 65 Arc Sensor: 2pcs Cover Material: PA, PP. Infrared and UV Protection Level: DIN15 Self Check Function: No Low Voltage Alarm Function: No Grinding Function: No Cutting Function: No1A Larger Viewing: The welding lens has a large field of vision, which can provide a clear and larger angle of view and reduce eye fatigue. 2High Sensitivity: The solar automatic dimming welding lens adopts 2pcs sensitive arc sensor for more stable and reliable performance. 3Faster Responses: The welding lens has quick response time within seconds, which can provide better protection for welders. 4Great Protection: Moreover, the auto darkening filter can effectively filter out infrared ray and UV ray to better protecting you. 5Easy to Install: Designed to have a compact size and a light weight as well, the convenient installation can be quickly finished. 1 xAuto Darkening Welding Lens