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🔥 See the weld, not the glare — weld smarter, not harder! 🔥
The Lincoln Electric 2X4 C-Series Auto-Darkening Welding Lens Shade 10 KP3778-1 features advanced 4C lens technology for unparalleled clarity and reduced eye strain. Designed for low to medium amperage welding, it offers a fixed Shade 10 dark state and Shade 3 light state for setup. Compatible with most 2" x 4.25" helmet cartridges, it boasts a durable, heat-resistant ABS housing and comes with a 2-year warranty, making it a reliable choice for professional welders seeking precision and comfort.







| ASIN | B07WYCV7YB |
| Batteries | 2 Lithium Metal batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Lithium Manganese Dioxide |
| Best Sellers Rank | #41,359 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #41 in Welding Helmets |
| Brand | Lincoln Electric |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,389) |
| Date First Available | August 23, 2019 |
| EU Spare Part Availability Duration | 2 Years |
| Global Trade Identification Number | 00150828590716 |
| Included Components | Screen |
| Item Package Quantity | 1 |
| Item Weight | 0.01 ounces |
| Item model number | KP3778-1 |
| Manufacturer | Lincoln Electric |
| Material | Other |
| Model Name | Lincoln Viking |
| Number of Items | 1 |
| Package Dimensions | 7.13 x 6.1 x 0.55 inches |
| Part Number | KP3778-1 |
| Size | 2 in. X 4.25 in. |
| Style | 4C Auto-Dark - Shade 10 |
| UPC | 150828590716 015082859071 |
| Warranty Description | 2 year manufacturer |
Y**A
The quality will be remembered long after the cost has been forgotten
Works like new after six years of service. It doesn’t make you a better welder, but it sure doesn’t hurt.
H**Y
Clear as crystal
Haven’t had any battery issues after a few months of use. Still clear as the day I first used it. Fit perfectly in my “finer pipelines cloud chopped hood” (no flip up). It is a little pricey, but it has a great warranty and holds true to the Lincoln name. It gets thrown around in my truck and hasn’t chipped or cracked. Also, everyone asks how it adjusts to tig. I have the shade 10 and haven’t had any flash.
A**R
Perfect upgrade for a flip up hood.
Great auto lens for a flip up hood. Like the blue gray color of the weld puddle. Does chewy through battery’s.
A**R
Awesome so far
New to these auto lens inserts, I bought another brand. It worked well for a time and then stopped taking a charge. This model doesn’t require all that because it has solar panels. Crisp and worth the money. Modern auto helmets are so heavy. Slap this lens in an old school light Huntsman etc. and your neck will thank you. Lincoln is a reputable brand you can trust.
T**A
Good lens, very clear, but the shade level isn't exactly accurate sometimes.
It works pretty good, hasn't flashed me too many times, and the lens is very clear. I work with high amperage MIG (1/16'' metal core spray transfer, ~340a) and I have to use shade 13, it's more like a 11.5 on my Miller T94i PAPR. If I use it at shade 12 (what I usually use on every other hood) I get a spot in my vision. The shade level around the edges of the lens also tapers off. There's a oval plunked in the box of the lens where it's shaded to the level you have it at, but in the corners and along the sides it'll be a shade 9 or 10. Kind of annoying, especially if you're having to use the edges of your lens to see what you're doing.
C**N
la primera vez que uso la marca claridad es bastante buena.. vengo de la esab A40.. la calidad tambien.. solo falta ver la durabilidad
A**X
Will die on you and give you arc eye
Stopped working after 4 months, super clear which is good. Battery life is close to none no matter the battery. While it worked it flickered a lot. It would probably flash me 2x per day and ask for new batteries every couple days until it died and never came back on. It sucks that one of the biggest welding company in the world can't make a reliable auto darkening lens that needs no batteries. Went back to using my ArcOne 240hd. Never lets me down for 100 less than this lens.
J**S
Great welding lens
Seeing through it is spectacular. I just don't understand why it doesn't recharge it self when using. I had to change the batteries the day I opened it up. That's why it's a 3 star review. Over-all you see everything when your welding. Update 6 months after use It got a Crack in the screen and in 24 hours Lincoln sent me a brand new lens so now they are getting a 5 star review and the lens works great. I still wish it didn't need batteries.
D**R
Some of these are hit and miss. I am on my 3rd one. The first 2 started flashing me after a few months. But the 3rd one has been working perfectly for the past 2 years.
A**S
La Lincoln Electric 2x4 es sin duda una de las mejores opciones en el mercado para quienes buscan un filtro de oscurecimiento automático confiable y preciso. Su rendimiento es impecable, ofreciendo una transición suave y rápida que protege la visión sin sacrificar la claridad del arco. Lo que más destaca es su comodidad y durabilidad. Diseñada para adaptarse a diversos cascos de soldadura, su peso ligero y resistencia la convierten en una herramienta imprescindible tanto para profesionales como para quienes buscan mejorar su equipo. Sin duda, una inversión inteligente para quienes buscan calidad, seguridad y eficiencia en cada soldadura. ¡Altamente recomendada! Andrés Mauricio Sánchez Cortes
J**N
Exelente producto lo recomiendo lo he usado y me parece un producto que cumple con lo que ofrece
M**K
Awesome lens
J**Z
Tuve que realizar un marco para que no quede floja en el porta vidrio pero todo bien
Trustpilot
3 weeks ago
2 weeks ago