Expectations are high following Swansea's impressive 3-0 win at Valencia in their opening Group A fixture, but Laudrup is expecting a tough test against the Swiss side.
"I've seen their game against Kuban Krasnodar and against Spartak Moscow in the play-off," Laudrup said.
"They don't have the big stars but they really work hard. They were underdogs against Spartak, a side who have played in the Champions League.
"They drew in Switzerland and were 1-0 down after 51 seconds in the second leg and were then outplayed for 20 minutes.
"But suddenly they went 3-1 up, so it shows they have a lot character, it will be a difficult game and a game where even if we're doing well we have to keep an eye on the spirit in their squad.
"They play differently than us, a little more direct at times, but they have really done well against the Russians so I want to repeat we have to be careful.
"We are at home, we have to try and control the game, but be aware of counter-attacks and their spirit."