Features Automatic darkening welding goggles with adjustable visor are designed to protect the eyes Under normal welding conditions, you are protected from sparks, splashes and harmful radiation. The automatic blackout filter automatically changes from a bright state to a dark state Loosen the screw with a screwdriver to replace the lithium battery, easy to use The use of high-quality, sturdy and durable materials ensures a long service life Specification: Item type: Welding safety goggles Material: silicone + PP Working temperature: -5℃~55℃. Power supply: lithium battery. Battery model: CR2450. Nominal capacity of lithium battery: 600mAh Package List: 1 x Welding Goggles 1 x User Manual Package List 1 x Welder Protective Goggles 1 x User Manual