Model No.: S777A (black color)
Color for Choice: Black, Red, Blue, Silver, Black Carbon Fiber, Blue Carbon Fiber, Red Carbon Fiber, Eagle with Flag, Leaf, Skull with Flame, Chinese Character Arts
Viewing Area: 98X43mm (3.86"X1.69"), two optical sensors
Size of Cartridge: 110x90X9mm (4.33"X3.54"0.35")
UV/IR Protection: Up to Shade DIN16 at all time
Light State: Shade DIN 4
Variable Shade: From DIN 9 to DIN 13
Power Supply: Solar cells, with built in replaceable battery
Power On/Off: Fully Automatic
Sensitivity: Outside can be contiued adjustable
Function: " Welding"/"Grinding" can be selective

Switching Time:
A) Light to Dark: 1/25000 sec (0.00004 sec)
B) Dark to Light: 0.25~0.8 sec at "short-middle-long" position
Operating Temperature: -5C to +55C (23F ~ 131F)
Storing Temperature: -20C ~ +70C (-4F ~ 158F)
Helmet Material: High-impact resistant plastic/Polyamide (Nylon)
Guarantee Period: 2 years
Standard: In full conformity with related EN safety standards and ANSI Z87.1-2003/2010 standards.
Total Weight: 480 g or 450 g