What is that red hammer icon?

I noticed a red hammer icon when viewing armor or weapons in the inventory. Can anyone explain what it means? What's the meaning of the number next to it?
The following screenshot shows the red hammer icon in the lower left area.
Best Answer
In the Witcher 3 it indicates the equipments condition, as in, it's damaged. It will most probably mean the same in other games
In gaming in general, for a long while now, there are a few "universal icons", one of them is the "hey, your stuff is broken" icon. Usually represented by an icon of the item colored yellow or red, sometimes with a lightning looking gap in them, it can also be a hammer with a yellow or red theme to them ( hammer usually represents a blacksmith or any other artesian and the coloring is ergency ). so next time you see it you'll know you need to maintain your stuff
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What does hammer mean Witcher 3?
Usually represented by an icon of the item colored yellow or red, sometimes with a lightning looking gap in them, it can also be a hammer with a yellow or red theme to them ( hammer usually represents a blacksmith or any other artesian and the coloring is ergency ).Why is my sword red in Witcher 3?
You can also see the amount of repair that a weapon needs by heading into the Inventory menu and inspecting your weapons and armor tab. Any weapon that is below 50% will have a red hammer on the weapon picture.Walter Murch - 'A red hammer' trick (203/320)
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