Can a spin box and slider co-exist in the same form?

In my interface, i have two options next to each other. In the first option, the user can set a number between 0 and 300, but only in intervals of 30 (so 0, 30, 60, 90 etc.) In the second option, the user can set any number between 0-300.

I made these options into sliders as such:

A complaint by a user however was that for the second option, it was hard to set a specific value, and they would rather have an input field or a spin box. Like this:

Is this an acceptable pattern? Or should i make both of them a spin box and deal with the verification of the first option in another way?