So far so good! This is the second Pyramid 3700 Time Clock I have purchased. I have purchased quite a few time clocks, as I work at a staffing agency and we install time clocks at various manufacturing and food processing locations for our temps to use. I have one location that's particularly dusty due to the product they make, and we also have the most temps in that location. I have used Lathem time clocks there, rebuilt various time clocks, replaced motors in time clocks, etc. So far, this time clock withstands the heavy duty use and the dust in the plant with no issues. Great product!