Auto-darkening welding helmet, which switches from a light to dark state when welding activity starts. Light state is DIN 4; Dark state is adjustable from DIN 9 to DIN 13 using the external knob. Response time from light to dark state is 0.04 milliseconds; return from dark to clear state in 0.03-0.04 sec. Power is supplied by solar cells with 2 built-in lithium batteries to offer power back-up for longer service life. No need for replacement batteries.

• Wheel ratchet size adjustment for easy fitting.
• Solar cell power with two built-in lithium back-up batteries and a working time of over 5000 hours.
• Superior optical quality LCD filter.
• Auto-darkening.
• switches from light to dark when the welding process starts.
• Suitable to be worn with disposable respirators.
• Suitable for a wide range of applications.
• CE certified.
• Retail box which aids presentation for retail sales.