Specification

- Fully automatic switching from light to dark on striking arc
- Fitted with solar power panel - no batteries required
- Features infinitely adjustable sensitivity and delay controls for switching dark to light
- Grinding mode enabling the user to grind without the need to remove mask
- Contoured design offers full face and neck protection and also protects lens from scratching when unit is laid down
- Fitted with comfortable head band and non-slip quick release ratchet mechanism

Specifications
- Model No: PWH399
- Shade Active: 9-13 Variable
- Shade Inactive: 4
- Viewing Area: 96 x 42mm
- UV/IR Protection: Yes
- Operating Time Light/Dark: 0.0001ms
- Temperature Range: -5°C to +55°C
- Power: Solar Cells