Detailed Product Description: Frame Size 108mm×51mm×6mm Viewing Area 90×35mm Range of UV/IR protection up to shade DIN 13 at all time Light Shade DIN 3 Dark Shade DIN11 Power on/off Automatic Switching Time (light to dark) 1ms Power Supply Solar cell and lithium batteries Operating Temperature -5~55 Storage Temperature -10~70 Weight 0.88kgs Material ABS