Rugged means having a rough, uneven, or tough surface. It can also describe someone or something strong, sturdy, and suited for harsh conditions. Full definition
To turn the tide, they created a tiny preserve from 27 square miles of rugged coastline, enforced by the fishermen who switched to tourism for income. (discovermagazine.com)
This would look better sans belt, and the belt itself is better with rugged looks. (notdeadyetstyle.com)
Although, all three do come with an emphasis on durability including a more rugged design in general, as well as rubber bumpers, reinforced elements, and a spill - resistant keyboard. (androidheadlines.com)