To understand what revolutionized the saws from iQ Power Tools, one needs to understand the new requirements for quartz stone dust at workplaces in the USA.
When you saw a 10cm x 10cm x 6cm flagstone, 45 grams of material disappears. Of the 45 grams, 20% consists of harmful quartz stone dust. This corresponds to 9 grams or 9,000,000 micrograms of quartz dust.
The new OSHA regulations state that you may only inhale 50 micrograms of quartz dust per cubic meter of inhaled air. This means that you may only inhale 840 micrograms per working day.
When you cut a single 10cm x 10cm x 6cm ground stone, quartz stone dust is produced which corresponds to what you may be exposed to for 10,714 days under the new laws. That corresponds to 34 years if you work 6 days a week without taking any vacation!
All saws from iQ Power Tools meet these stringent requirements, what about your rock saw?
Here you can read the independent tests of the products from iQ Power Tools: https://iqpowertools.com/wp-content/uploads/2018/10/iQ-Power-Tools-Silica-Report-2018.pdf