AUTO DARKENING WELDING HELMET - PAPR (Powered Air Purifying Respirator) system with auto darkening welding helmet that features true colour technology for improved depth perception, allowing far greater welding precision. LARGE VIEWING AREA - Large viewing area of 108 x 74mm and two panoramic side view lenses. DIGITAL SENSITIVITY & DELAY CONTROLS - Digital control panel easily switches between modes and set delay, sensitivity and shade settings. Also includes memory save function to preset and save up to ten personalised settings. LITHIUM BATTERY POWERED - Respirator unit provides the user with a constant filtered stream of air to their head and face for up to approximately 6hrs on the highest setting. TH3 PERFORMANCE CLASS - The kit meets performance class TH3 (Less than 0.2% inward leakage) according to EN 12941:1998/A2:2008. The filter is designed to reduce or remove dust and particles but not vapours and gases., Manufacturer: Sealey