OEMTOOLS 24358 Automatic Darkening Welding Helmet with Grinding Function<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Two Independent Arc Sensors</li><li>Grinding Function</li><li>Lens Darkening is 1/25，000</li><li>Battery Powered with Solar Assist for Long Battery Life ( up to 5，000 hrs)</li><li>Features Auto-Off Circuitry After 15-20 minutes</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51xG5w%2BpL-L.jpg" noproxy>