New Solar Auto Darkening Grinding Jocker Clown Helmet Electric Welding Face Mask Main Features • Novelty appearance design, super light and durable shell • In the process of welding, the object has high definition and can observe the solder joints very clearly so as to ensure the welding quality • Advanced double filter technology, uniform light transmission, clear image, avoiding harmful radiation from UV / IR or strong light damage to glass • When not photosensitive, light shield number is three, providing adequate light for ready work and accurate polishing Specification • Light shade: DIN4 • Dark shade: DIN - 13 adjustable outside • Lens size: 93 x 43 x 6mm • Cartridge size: 110 x 90mm • Response time: less than 1/25000s ( from bright to dark ) • Release time: 0.155 - 0.80s adjustable ( from dark to bright ) • Switching time: 1/10000s • Sensitivity: low / high ( welding time according to magnitude of current ) • Power supply: rechargeable Li-ion / solar battery ( included ) • UVT transmission: 313nm ( 0.003 percent and less ) 365nm ( 0.009 percent and less ) • UV protection: class 15 • Infra red transmission: 780 - 1300nm ( 0.003 percent and less ) 1300 - 2000nm ( 0.009 percent and less ) • Work temperature: -5 - 55 Deg.C ( 23 - 131 Deg.F ) • Store temperature: -20 - 70 Deg.C ( -4 - 158 Deg.F ) • Application range: electric, argon arc, gas welding, soldering and all except laser welding General Specification Dimension and Weight Product weight: 0.5000 kg Package weight: 0.5200 kg Product size: (L x W x H) 30.00 x 23.00 x 22.00 cm / 11.81 x 9.06 x 8.66 inches Package size: (L x W x H) 35.00 x 24.00 x 23.00 cm / 13.78 x 9.45 x 9.06 inches Package Contents: 1 x Welding Helmet, 1 x Headband, 1 x English Manual