New Variable Colour technology in the dark state (natural; cool; warm colour tones) New shade 14 for heavy-duty welding Extra-large viewing area 73 x 109mm New two step dark-light recovery New Bluetooth connectivity for memory modes; shade and colour selection True-View optics for colour and contrast Shades 5; 8-14 with a light shade of 3 (AS/NZS1338.1) Made in Sweden with Auto-On Highest possible optical classification (1/1/1) Advanced TST (TIG Sensor Technology) down to industry leading 1 amp Only suits the Speedglas G5-01 welding helmet