Type:AS-4000F

View area selectable: 100x60mm/ 97x47mm

Mask and auto darkening filter meet withCE, ANSI, CSA

Features :1.View size of high cost performance: 97X47mm & 100x60mm big view area.2.Professional degree of classification: 1/1/1/2.3.Faster switching time

Funtion: Shade 4/9-13, internal/external control,Sensitivity and Delay-Adjustable & Internal,Grind/ weld selection,User friendly designLow battery warning &grinding warning flash.