Kacbu lists 1 Smartwatches that stands out for Durability: Amazfit. This is not a ranking; the product is here because its editorial assessment found it strong for this use.
For durability, the water and dust protection rating, the body material and the display glass decide. A protection rating describes a laboratory condition, not what the warranty covers; real resistance to drops and scratches is a separate question.
Each card carries what sets the product apart. Open the product page for its strengths, weaknesses and alternatives.