SZ-MST S2/China
- Filter size: 110x90x10mm, fixedly mounted on the welding mask. Many other types of filters of the same size can be replaced with this mask.
- View window size: 92x42mm
- Light / dark status: DIN 4/DIN 9-13
- Adjustment knob (left side of mask): When placed in the off position, the darkness is 4 (corresponding to the case of eye protection when welding), rotate clockwise to get darkness 9,10,11, 12,13 depending on the electric current intensity when welding.
- Extremely fast automatic "darkness" adjustment speed: 1/25,000 second
- Delay time: adjustable from 0.2 to 0.8 seconds (turn the DELAY knob from min to max)
- Use lithium batteries and solar batteries
- Light sensitivity: Adjustable from low to high (rotate knob from LO to HI)
- Green
- The product meets European EN standards

SZ-MST S1/ China
- Filter size: 110x90x10mm, fixedly mounted on the welding mask. Many other types of filters of the same size can be replaced with this mask.
+ Visible area size: 100x50mm
+ Light / dark status: DIN 4/DIN 9-13
- Adjustment knob (right side of mask): Rotate clockwise to get darkness 9,10,11,12,13 depending on the intensity of the electric current when welding.
- Extremely fast automatic "darkness" adjustment speed: 1/25,000 second
- Light sensitivity: Adjustable (rotate knob from LO to HI)
- Delay time: 0.6 seconds
- Power supply: 2 small batteries and solar battery
- On and off mode: Open by pressing button (ON) - Turn off automatically
- Light sensitivity: Adjustable (rotate knob from LO to HI)
- The product meets EN379:2003, EN 169:2002, EN 175:1997, ANSI Z87.1.2010 standards