The Sealey PWH4 Auto Darkening Welding Helmet with adjustable shade control between 9-13 The Sealey PWH4 is a welding helmet with infinitely adjustable shade control between 9-13, suitable for MIG, TIG, arc welding and grinding. This helmet is fitted with true colour technology for improved depth perception, allowing far greater welding precision. The grinding function enables the user to grind without removing the mask. The PWH1 also features sensitivity and delay controls for switching light to dark. Features: Available in four different colours Suitable for MIG, TIG, arc welding and grinding Solar panel power supply - no batteries required Shade is selected by a rotary knob on side of helmet Complies with BS EN 379, BS EN 175 and DIN standards Fully automatic switching from light to dark on striking arc Grinding function enables user to grind without removing mask Features sensitivity and delay controls for switching light to dark Welding helmet with infinitely adjustable shade control between 9-13 True colour technology for improved depth perception, allowing far greater welding precision Specifications: Shade Inactive: 4 Power: Solar Cells Nett Weight: 535g Grinding Function: Yes Viewing Area: 92x42mm Shade Active: 9-13 Variable Operating Time Light/Dark: 0.04ms Operating Temperature: -5°C to +55°C