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High quality variable shade 9-13 lens manufactured and tested to BS EN 379. Fully automatic switching from light to dark on striking arc. Features adjustable sensitivity and delay switches. Grinding function enables user to grind without removing mask. Deluxe contoured helmet approved to BS EN 175 which gives full neck protection and protects lens from scratching when helmet is laid down. Comfortable headband and non-slip quick release ratchet mechanism. Suitable for MIG, TIG, arc and gas welding. Features & Benefits: • High quality variable shade 9-13 lens manufactured and tested to BS EN 379. • Fully automatic switching from light to dark on striking arc. • Features infinitely adjustable sensitivity and delay switches. • Grinding function enables user to grind without removing mask. • Deluxe contoured helmet approved to BS EN 175 which gives full neck protection and protects lens from scratching when helmet is laid down. • Comfortable headband and non-slip quick release ratchet mechanism. • Suitable for MIG, TIG, arc and gas welding. • Model No. PWH601 Specifications: Model No PWH601 Brand: Sealey Grinding Function: Yes Nett Weight: 495g Operating Temperature: -10°C to +60°C Operating Time Light/Dark: 0.1ms Power: Lithium Cell Battery Shade Active: 9-13 Variable Shade Inactive: 4 Viewing Area: 100 x 41mm