Main features: 1. High strength flame retardant nylon; strong, durable and light weight. 2. Simple operation; comfortable wearing; all-positional protection of the face, neck and ears. 3. Auto-darkening light control; darkness shade no. Positioned accurately. 4. High-intensity ultraviolet / infrared shielding protection, to ensure the operator from uv / ir and other harmful rays of the injury. Filters can be matched with: yc-gy-a, yc-gy-b, yc-gy-c, yc-e (l), yc-e(h) Technical parameter: Filter dimension (mm): 110x90x9 Viewing size (mm): 92x42/98x48 Light state shade: din4 Dark state shade: din9-13 Shade control ways: external, stepless adjustable Response time: 0.0001s Sensitivity control: adjustable Time from dark to light: 0.1-0.9s (adjustable) Uv/ir protection class: din15 Working temperature: between -10 and 55 íµ Power supply: solar cell & lithium batteries Arc sensor: 2 Front cover rear cover Model type ycp-101 ycp-201/ycp-202 Size (mm) 115x94x1.0 97x47x0.8/103.5x53x1.0 Material pc pc Qty/ctn: 4pcs N.W/g.W: 1.9/4.8kgs Dimension: 48x48x35cm