3MTM SpeedglasTM Welding Helmet G5-02 with curved glass auto-darkening filter (ADF), variable dark shades 8-12 Great clarity before, during and after welding, with our 3MTM SpeedglasTM Natural Color Technology By selecting just the right settings for each task, you help reduce eye strain and can improve the quality of every weld The sensitivity of arc detection can be adjusted for unsurpassed switching reliability Delay function to set the dark-to-light opening time Bluetooth enabled: with the 3M Connected Equipment app, users get access to additional functionalities, statistics and documentation.