3M Speedglas - Auto-Darkening Helmet - 9100X

Viewing Area: 2.1 x 4.2 in. (54 x 107 mm)
Battery Life: 2500 hours
Weight complete assembly, standard: 18.3 oz (520 g)
Weight complete assembly, with SideWindows: 19.2 oz (545 g)
Dark State: Shade 5, 8, 9 - 13 (variable)
Light State: Shade 3
Switching speed: 0.1 ms (+23 degrees C)
Special modes: Grind, tack, lock-in
Sensitivity modes: 5 levels
Number of sensors: 3
Delay (recovery): Adjustable 40 - 1300 ms
Temperature range: 23 degrees F to 131 degrees F (-5 C to 55 degrees C)
Standards compliance: ANSI Z87.1-2003, CSA Z94.3-2007
Warranty: 2 years
Head sizes: 6 1/4 to 8 (50-64 cm)

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