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Home » Autodarkening welding helmets by Optrel, Inc.
E684 helmet/PAPR combination marries autodarkening filter (ADF) lens technology and optics with a highly innovative, ergonomically designed PAPR system. Optrel e684 helmet features the exclusive Adaptive Shade Autopilot technology which automatically adjusts the e684 ADF to the appropriate shade level between 5 and 13 as one welds.
